I/O Modules and Hardware
I/O Adapter Modules1747 I/O adapter modules allow 1746 I/O modules in a remote chassis to be controlled by SLC and PLC processors. SLC processors require a scanner module to reside in the local chassis in order for the remote communication to occur. The adapter module must reside in the left-most slot of the remote chassis and can interface to a maximum of 30 1746 I/O modules residing in up to three interconnected chassis. There are three 1746 I/O adapter modules: the 1747-ASB for remote I/O communication, the 1747-ACN15 for remote communication via ControlNet, and the 1747-ACNR15 for remote communication via ControlNet with redundant media port.
Specifications
| Cat. No. | 1747-ACN15 | 1747-ACNR15 | 1747-ASB |
| Description | Single-port non-redundant-media/redundant-media ControlNet I/O adapter module | Universal Remote I/O adapter module | |
| Ports | ControlNet I/O adapter port | Universal Remote I/O adapter port | |
| Communication Rate | 5 Mbit/s | •57.6 kbit/s •115 kbit/s •230 kbit/s |
|
| Connectors | •1 BNC connector for non-redundant media operation •1 NAP (RJ-45 8-pin with shield) |
•2 BNC connectors for redundant media operation •1 NAP (RJ-45 8-pin with shield) |
6-pin Phoenix connector |
| Cable | Quad-shield RG-6 coaxial cable | Belden 9463 | |
| Backplane Current Load | 900 mA at 5V DC | 375 mA at 5V DC | |
| Weight | 0.2 kg (0.4 lb) | 0.2 kg (0.5 lb) | 0.2 kg (0.4 lb) |
| Operating Shock | 30 g (3 pulses, 11 ms) | ||
| Nonoperating Shock | 50 g (3 pulses, 11 ms) | ||
| Vibration | 1 g at 5…2000 Hz | ||
| Vibration, Non-Operating | 2.5 g at 5…2000 Hz | ||
| Operating Temperature | 0…60 °C (32…140 °F) | ||
| Nonoperating Temperature | -40…85 °C (-40…185 °F) | ||
| Relative Humidity | 5…95% noncondensing | ||
| Certifications⋆ | UL, C-UL, CE, C-Tick, ControlNet | ||
| ⋆ When product is marked. See the Product Certification link at http://www.ab.com for Declarations of Conformity, Certificates, and other certification details. | |||
ControlNet Adapter Communication Capabilities
The table below indicates with a “ü“ which ControlNet controllers can communicate to the 1747-ACN via scheduled messaging.
| Scheduled Messaging |
1747-SCNR | 1771-PLC5C | 1756-Lx via 1756-CNB |
1784-KTCS |
| 1747-ACN(R)15 Discrete I/O |
ü | ü | ü | |
| 1747-ACN(R)15 Analog I/O |
ü | ü | ||
Chassis and Hardware
SLC modular chassis provide flexibility in system configuration. Four chassis sizes are available to suit your application needs. Choose from 4-slot, 7-slot, 10-slot, and 13-slot chassis based on your modular hardware component requirements.
The SLC 1746 modular chassis houses the processor or I/O adapter module and the I/O modules. A maximum of 3 chassis can be interconnected with chassis interconnect cables for a maximum of 30 module slots that can be addressed locally by a processor or I/O adapter in the left-most slot of the 3-chassis assembly.
I/O Chassis
| Cat. No. | Description | No. of Slots | Dimensions (HxWxD), Approx. | Weight | Mounting |
| 1746-A4 | I/O chassis for 1746 I/O modules | 4 | 171 x 177 x 145 mm (6.73 x 6.97 x 5.71 in.) | 0.7 kg (1.6 lb) | Back-panel mount |
| 1746-A7 | I/O chassis for 1746 I/O modules | 7 | 171 x 282 x 145 mm (6.73 x 11.11 x 5.71 in.) | 1.1 kg (2.4 lb) | Back-panel mount |
| 1746-A10 | I/O chassis for 1746 I/O modules | 10 | 171 x 397 x 145 mm (6.73 x 15.64 x 5.71 in.) | 1.5 kg (3.3 lb) | Back-panel mount |
| 1746-A13 | I/O chassis for 1746 I/O modules | 13 | 171 x 502 x 145 mm (6.73 x 19.78 x 5.71 in.) | 1.9 kg (4.2 lb) | Back-panel mount |
Chassis Interconnect Cables
| Cat. No. | Description | Length |
| 1746-C7 | Connects 1746 chassis to extend the backplane from one to the other | 0.15 m (0.5 ft) |
| 1746-C9 | Connects 1746 chassis to extend the backplane from one to the other | 0.91 m (3.0 ft) |
| 1746-C16 | Connects 1746 chassis to extend the backplane from one to the other | 1.22 m (4.0 ft) |
Miscellaneous Hardware
| Cat. No. | Description |
| 1746-N2 | Slot Filler—Covers any unused I/O slot in a chassis. The slot filler helps guard against debris falling into the slot, possibly causing a short on the backplane. |
1746 I/O Module Overview
The 1746 I/O product line provides more than 60 modules to meet your application needs in a modular assembly—including intelligent I/O modules.
- Digital I/O modules provide 4 through 32 I/O per module.
- Digital I/O circuits interface to on/off sensors/actuators.
- Ladder logic has direct access to I/O values.
- Input modules, output modules, and combination input/output modules.
- AC and DC input modules.
- AC, DC, and relay-contact output modules.
- Digital I/O circuits interface to on/off sensors/actuators.
- Analog I/O modules provide 4 through 16 I/O per module.
- D/A and A/D conversions interface analog signals to data-table values
- Ladder logic has direct access to I/O values.
- Input modules, output modules, and combination input/output modules.
- A high level of resolution for accurate control in a broad range of analog applications.
- D/A and A/D conversions interface analog signals to data-table values
- Intelligent I/O modules are available to enhance your control system. These modules include a high-speed counter module, a BASIC language module, a motion control module, and communication modules. Each provides a unique easy-to-use interface between the I/O circuits (digital and/or analog) and the CPU.
This modular hardware design uses cost- and space-effective means to add I/O to your control system. These modules can be used:
- In a local I/O chassis of an SLC modular-hardware controller.
- At a location remote from the processor, in an I/O chassis with a 1747-ACN15 or -ACNR15 I/O adapter on a ControlNet link with the processor.
- At a location remote from the processor, in an I/O chassis with a 1747-ASB I/O adapter on a Universal Remote I/O link with the processor.
Benefits
- Hardware-platform sharing makes spare-parts stocking convenient.
- Combinations of input and outputs in the same digital and analog modules provide expansion capabilities without sacrificing space or increasing cost.
- Variety of voltages creates a precise power fit for your application.
- No need to disconnect wiring to replace module of 16 or more I/O; removable terminal blocks are shipped with I/O modules.
- Broad range of signal interfaces to AC and DC sensors/actuators for a wide variety of applications.
- LED indicators show input/output status for easier troubleshooting.
- Modules available in different densities (32 I/O per module max) for greater flexibility and cost savings.
- 1746 I/O modules include optical coupling and filter circuitry for signal noise reduction.
- A wide range of analog signal levels including standard analog inputs and outputs, and direct thermocouple and RTD temperature inputs.
Specifications
| Operating Shock (relay contact output) | 10 g (3 pulses, 11 ms) |
| Operating Shock (all modules except relay contact output) | 30 g (3 pulses, 11 ms) |
| Nonoperating Shock | 50 g (3 pulses, 11 ms) |
| Vibration | 1.0 g at 5…2000 Hz |
| Vibration, Non-Operating | 2.5 g at 5…2000 Hz |
| Environmental conditions | |
| Operating Temperature | 0…60 °C (32…140 °F) |
| Nonoperating Temperature | -40…85 °C (-40…185 °F) |
| Relative Humidity | 5…95% noncondensing |
Digital I/O Modules
1746 Digital AC Input Modules
| Cat. No. | Operating Voltage | Signal Delay, Max. | Off-State Current, Max. | Number of Inputs | Backplane Current Load @ 5V | Applications |
| 1746-IA4 | 85…132V AC | on = 35 ms off = 45 ms |
2 mA | 4 | 35 mA | General-purpose 120V AC inputs |
| 1746-IA8 | 2 mA | 8 | 50 mA | |||
| 1746-IA16 | 2 mA | 16 | 85 mA | |||
| 1746-IM4 | 170…265V AC | on = 35 ms off = 45 ms |
2 mA | 4 | 35 mA | General-purpose 220/240V AC inputs |
| 1746-IM8 | 2 mA | 8 | 50 mA | |||
| 1746-IM16 | 2 mA | 16 | 85 mA | |||
| 1746-IN16 | 24V AC DC Sink (Source Load) |
on = 15 ms DC off = 15 ms DC on = 25 ms AC off = 25 ms AC |
1 mA | 16 | 85 mA | V-AC or V-DC operation |
1746 Digital DC Input Modules
| Cat. No. | Operating Voltage | Signal Delay, Max. | Off-State Current, Max. | Number of Inputs | Backplane Current Load @ 5V | Applications |
| 1746-IG16 | 4.5…5.5V DC source (sink load) | on = 0.25 ms off = 0.50 ms |
— | 16 | 140 mA | • TTL input • BCD inputs |
| 1746-IB8 | 10…30V DC sink (source load) | on = 8 ms off = 8 ms |
1 mA | 8 | 50 mA | General-purpose DC inputs |
| 1746-IB16 | 10…30V DC sink (source load) | 1 mA | 16 | 85 mA | ||
| 1746-IV8 | 10…30V DC source (sink load) | on = 8 ms off = 8 ms |
1 mA | 8 | 50 mA | |
| 1746-IV16 | 1 mA | 16 | 85 mA | |||
| 1746-ITV16 | on = 0.3 ms⋆ off = 0.5 ms |
1.5 mA | 16 | 85 mA | Fast response for time-critical applications | |
| 1746-ITB16 | 10…30V DC sink (source load) | on = 0.30 ms⋆ off = 0.50 ms |
1.5 mA | 16 | 85 mA | |
| 1746-IB32 | 15…30V DC sink (source load) | on = 3 ms off = 3 ms |
1 mA | 32 | 106 mA | General-purpose DC inputs. High-density for limited panel space |
| 1746-IV32 | 15…30V DC source (sink load) | on = 3 ms off = 3 ms |
1 mA | 32 | 106 mA | |
| 1746-IC16 | 30…55V DC sink (source load) | on = 4 ms off = 4 ms |
1.5 mA | 16 | 85 mA | General-purpose 48V DC inputs |
| 1746-IH16 | 90…146V DC‡ sink (source load) | on = 9 ms off = 9 ms |
0.8 mA | 16 | 85 mA | General-purpose 125V DC inputs |
| ⋆ Typical signal delay for these modules: on = 0.1 ms, off = 0.25 ms @ 24V DC. ‡ Consult the user manual for module deratings at 146V DC and 60 °C. |
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1746 Digital AC Output Modules
| Cat. No. | Operating Voltage | Continuous Current per Output, Max. |
Continuous Current/Module, Max. |
Number of Outputs | Backplane Current Load | Applications |
| 1746-OA8 | 85…265V AC | 1.0 A at 30 °C 0.5 A at 60 °C |
8 A at 30 °C 4 A at 60 °C |
8 | 185 mA at 5V | General-purpose 120/240V AC outputs |
| 1746-OA16 | 0.5 A at 30 °C 0.25 A at 60 °C |
8 A at 30 °C 4 A at 60 °C |
16 | 370 mA at 5V | ||
| 1746-OAP12 | 2.0 A at 30 °C 1.25 A at 55 °C 1.0 A at 60 °C |
9.0 A at 30 °C 6.0 A at 60 °C |
12 | 370 mA at 5V | High-current 120/240V AC outputs; 6 outputs per common; fused commons protect module |
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1746 Digital DC Output Modules
| Cat. No. | Operating Voltage | Continuous Current per Output, Max. |
Continuous Current/Module, Max. |
Number of Outputs | Backplane Current Load | Applications |
| 1746-OB6EI | 10 …30V DC source |
2.0 A at 0…60 °C | 12 A at 0…60 °C | 6 | 46 mA at 5V | Individually isolated electronically fused DC outputs that automatically reset |
| 1746-OB8 | 10…50V DC source |
1.0 A at 30 °C 0.5 A at 60 °C |
8 A at 30 °C 4 A at 60 °C |
8 | 135 mA at 5V | General-purpose DC outputs |
| 1746-OV8 | 10…50V DC sink |
1.0 A at 30 °C 0.5 A at 60 °C |
8 A at 30 °C 4 A at 60 °C |
8 | 135 mA at 5V | General-purpose DC outputs |
| 1746-OB16 | 10…50V DC source |
0.50 A at 30 °C 0.25 A at 60 °C |
8 A at 30 °C 4 A at 60 °C |
16 | 280 mA at 5V | General-purpose DC outputs |
| 1746-OB16E | 10…30V DC source |
1.00 A at 30 °C 0.50 A at 60 °C |
8 A at 0…60 °C | 16 | 135 mA at 5V | Electronically fused DC outputs that automatically reset |
| 1746-OV16 | 10…50V DC sink |
0.5 A at 30 °C 0.25 A at 60 °C |
8 A at 30 °C 4 A at 60 °C |
16 | 270 mA at 5V | General-purpose DC outputs |
| 1746-OBP8 | 20.4…26.4V DC source |
2.0 A at 60 °C | 8.0 A at 0…60 °C | 8 | 135 mA at 5V | High-current DC source output |
| 1746-OBP16 | 20.4…26.4V DC source |
1.5 A at 30 °C 1.0 A at 60 °C |
6.4 A at 0…60 °C | 16 | 250 mA at 5V | High-current DC source output |
| 1746-OVP16 | 20.4…26.4V DC sink |
1.5 A at 30 °C 1.0 A at 60 °C |
6.4 A at 0…60 °C | 16 | 250 mA at 5V | High-current DC sink output, fused common |
| 1746-OG16 | 5V DC sink |
0.024 A | 0.384 A | 16 | 180 mA at 5V | TTL loads; sink-load display devices |
| 1746-OB32 | 5…50V DC source |
0.5 A at 30 °C 0.2 A at 60 °C |
8.0 A at 0…60 °C | 32 | 190 mA at 5V | High-density low-current DC outputs |
| 1746-OB32E | 10…32V DC source |
0.5 A at 30 °C 0.25 A at 60 °C |
8.0 A at 0…60 °C | 32 | 190 mA at 5V | Electronically fused DC outputs that automatically reset |
| 1746-OV32 | 5…50V DC sink |
0.5 A at 30 °C 0.25 A at 60 °C |
8.0 A at 0…60 °C | 32 | 190 mA at 5V | High-density low-current DC outputs |
1746 Digital Contact Output Modules
| Cat. No. | Operating Voltage | Continuous Current per Output, Max.⋆ |
Continuous Current/Module, Max. |
Number of Outputs | Type of Contact Outputs | Backplane Current Load | Applications |
| 1746-OX8 | 5…125V DC 5…265V AC |
3 A at 120V AC 1.2 A at 24V DC |
See‡ | 8 | N.O. relay contact outputs | 85 mA at 5V DC 90 mA at 24V DC |
Individually isolated high-current relay contact outputs |
| 1746-OW4 | 1.5 A at 120V AC 1.2 A at 24V DC |
8 A | 4 | 45 mA at 5V DC 45 mA at 24V DC |
Relay contact outputs | ||
| 1746-OW8 | 1.5 A at 120V AC 1.2 A at 24V DC |
16 A 8 A per common |
8 (2 sets of 4) |
85 mA at 5V DC 90 mA at 24V DC |
Relay contact outputs; 4 outputs per common | ||
| 1746-OW16 | 1.5 A at 120V AC 1.2 A at 24V DC |
16 A‡ 8 A per common |
16 (2 sets of 8) |
170 mA at 5V DC 180 mA at 24V DC |
Relay contact outputs; 8 outputs per common | ||
| ⋆ Inductive load rating. ‡ The continuous current per module must be limited to 1440 VA. |
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1746 Digital I/O Combination Modules
| Cat. No. | Inputs | Outputs | Backplane Current Load | Applications | |||||
| Operating Voltage | Signal Delay, Max. | Off-State Current, Max. | Number of Inputs | Operating Voltage/ Type |
Continuous Current per Output, Max .⋆ | Number of Outputs | |||
| 1746-IO4 | 85…132V AC | on = 35 ms off = 45 ms |
2 mA | 2 | 5…265V AC 5…125V DC N.O. relay contact |
1.5 A at 120V AC 1.2 A at 24V DC |
2 | 30 mA at 5V DC 25 mA at 24V DC |
Combination 120V AC inputs and relay contact outputs |
| 1746-IO8 | 4 | 4 | 60 mA at 5V DC 45 mA at 24V DC |
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| 1746-IO12 | 6 | 6 | 90 mA at 5V DC 70 mA at 24V DC |
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| 1746-IO12DC | 10…30V DC | on = 8 ms off = 8 ms |
1 mA | 6 | 6 | 80 mA at 5V DC 60 mA at 24V DC |
Combination 24V DC inputs and relay contact outputs | ||
| ⋆ Inductive load rating. | |||||||||
Analog I/O Modules
| Cat. No.§ | Number of Inputs | Backplane Current Load | Bandwidth | Step Response at 95% |
Update Period |
Resolution (bits), Max.⋆ |
| 1746-NI4 | 4 inputs (±10V DC, ±20 mA) | 25 mA at 5V DC 85 mA at 24V DC |
10 Hz | 60 ms | 512 ms | 16 bits |
| 1746-NI8 | 8 inputs (±10V DC, ±20 mA) | 200 mA at 5V DC 100 mA at 24V DC |
1…75 Hz | 0.75…730 ms at 99%‡ | 6 ms / 8 chan | 16 bits |
| 1746-NI16I | 16 inputs (±20 mA, 4…20 mA, 0…1 mA, or 0…20 mA) | 125 mA at 5V DC 75 mA at 24V DC |
6…250 Hz | 9…630 ms‡ | — | 16 bits |
| 1746-NI16V | 16 inputs (±10V DC, 1…5V DC, 0…5V DC, or 0…10V DC) | 125 mA at 5V DC 75 mA at 24V DC |
6…250 Hz | 9…630 ms‡ | — | 16 bits |
| § Analog input modules do not provide loop power for analog input devices. ⋆ For each module, the data format is BCD or natural binary. ‡ A function of the input filter selection. |
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1746 Analog Output Modules
| Cat. No. | Number of Outputs | Backplane Current Load | Bandwidth | Step Response at 95% |
Update Period |
Resolution (bits), Max.⋆ |
| 1746-NO4I | 4 outputs (0…20 mA) | 55 mA at 5V DC 195 mA at 24V DC |
— | 2.5 ms | 512 ms | 14 bits |
| 1746-NO4V | 4 outputs (±10V DC) | 55 mA at 5V DC 145 mA at 24V DC |
— | 2.5 ms | 512 ms | 14 bits |
| 1746-NO8I | 8 outputs (0…20 mA) | 120 mA at 5V DC 250 mA at 24V DC |
— | 1.0 ms | 540 ms / 8 channel | 16 bits |
| 1746-NO8V | 8 outputs (±10V DC) | 120 mA at 5V DC 160 mA at 24V DC |
— | 1.0 ms | 540 ms / 8 channel | 16 bits |
| ⋆ For each module, the data format is BCD or natural binary. ‡ A function of the input filter selection. |
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1746 Analog Combination Modules
| Cat. No.§ | Number of Inputs/ Outputs | Backplane Current Load | Bandwidth | Step Response at 95% |
Update Period |
Resolution (bits), Max.⋆ |
| 1746-NIO4V | 2 inputs (±10V DC, ±20 mA) 2 outputs (±10V DC) |
55 mA at 5V DC 115 mA at 24V DC |
10 Hz | 60 ms in 2.5 ms out |
512 ms | 16 bits in 14 bits out |
| 1746-NIO4I | 2 inputs (±10V DC, ±20 mA) 2 outputs (0…20 mA) |
55 mA at 5V DC 145 mA at 24V DC |
10 Hz | 60 ms in 2.5 ms out |
512 ms | 16 bits in 14 bits out |
| 1746-FIO4I (current outputs) |
2 inputs (differential, 0…10V DC, 0…20 mA) 2 outputs (0…20 mA) |
55 mA at 5V DC 150 mA at 24V DC |
7 Hz | 100 ms in 2.5 ms out |
512 ms | 12 bits in 14 bits out |
| 1746-FIO4V (voltage outputs) |
2 inputs (differential, 0…10V DC, 0…20 mA) 2 outputs (±10V DC) |
55 mA at 5V DC 120 mA at 24V DC |
7 Hz | 100 ms in 2.5 ms out |
512 ms | 12 bits in 14 bits out |
| § Analog input modules do not provide loop power for analog input devices. ⋆ For each module, the data format is BCD or natural binary. ‡ A function of the input filter selection. |
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1746 RTD and Thermocouple Modules
| Cat. No. | Number of Inputs | Backplane Current Load | Bandwidth | Step Response at 95% |
Update Period |
Resolution (bits), Max.⋆ |
| 1746-NR4 RTD/Resistance Analog Input Module |
4 inputs 100 W, 200 W, 500 W Platinum 120 W Nickel 604 W Nickel/Iron 10 W Copper 150 W, 500 W, 1000 W, 3000 W direct resistance |
50 mA at 5V DC 50 mA at 24V DC |
2.62…65.5 Hz | 12…300 ms | 17 ms…1.2 s | 16 bits |
| 1746-NR8 RTD/Resistance Analog Input Module |
8 inputs 100 W, 200 W, 500 W Platinum 120 W Nickel 604 W Nickel/Iron 10 W Copper 150 W, 500 W, 1000 W, 3000 W direct resistance |
100 mA at 5V DC 55 mA at 24V DC |
7.80…1677 Hz | 1.47…120 ms | 6 ms…2 s | 16 bits |
| 1746-NT4 Thermocouple/mV Analog Input Module |
4 inputs B, E, J, K, N, R, S, T Thermocouple and ±50 mV or ±100 mV |
60 mA at 5V DC 40 mA at 24V DC |
2.62…65.5 Hz | 12…300 ms | 26 ms…1.2 s | 16 bits |
| 1746-NT8 Thermocouple/mV Analog Input Module |
8 inputs B, E, J, K, N, R, S, T Thermocouple and ±50 mV or ±100 mV |
120 mA at 5V DC 70 mA at 24V DC |
10…250 Hz | 400 ms | 356 ms…4.05 s | 16 bits |
| 1746-INT4 Isolated Thermocouple/mV Analog Input Module |
4 inputs B, C, D, E, J, K, N, R, S, T Thermocouple and ±50 mV or ±100 mV |
110 mA at 5V DC 85 mA at 24V DC |
8 Hz | 400 ms | 500 ms | 16 bits |
| ⋆ For each module, the data format is BCD or natural binary. ‡ A function of the input filter selection. |
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Specialty I/O Modules
1746 Process Control I/O Modules
- 1746 Process Control I/O modules do not require external power.
- 16-bit resolution or 15-bits plus sign bit.
- Data format is 16-bit signed integer (natural binary).
| Cat. No. | Number of Inputs/ Outputs | Analog Inputs | Analog Outputs | Slots | Backplane Current Load | I/O Connection Hardware |
| 1746-BLM⋆ Blow Molding Module |
4 digital inputs 4 analog inputs 4 digital outputs 4 analog outputs 1 sensor excitation output |
0…10 mV | ±10 mV | 1 | 110 mA at 5V DC 85 mA at 24V DC |
1492-CABLE010H and 1492-IFM40F |
| Description — The blow molding module is an intelligent I/O module that can provide a maximum of 4 axes of closed-loop parison control on most types of blow-molding machines. You can use multiple modules on machines with more than for heads. Configurations include AC cumulator push-out control and three parison axis and two AC cumulator push-outs and two parison axes. The module is designed to work in a variety of plastic machine applications including AC cumulator machines, continuous extrusion machines, and reciprocating screw machines. The module performs its servo control task independently but receives its configuration and run-time information from the SLC processor. | ||||||
| 1746-BTM‡ Barrel Temperature Control Module |
4 temperature inputs (for 4 PID heat/cool loops) |
Thermocouple, or ±50mV, or ±100mV | None | 1 | 110 mA at 5V DC 85 mA at 24V DC |
1746-RT32 |
| Description — The barrel temperature control module is an intelligent I/O module that can accommodate 4 heat/cool PID loops for temperature control applications. The module has 4 analog inputs, each of which functions as the controlled variable (C) input for a PID loop. The PID algorithm is performed on the module for each of the loops. The manipulated variable (M) output of each loop is sent from the module to the SLC processor’s data table as both a numeric value and as a time-proportioned output (TPO) signal. Your ladder logic can send either the M numeric value to an analog output module, or the TPO signal to a digital output module to close the loop. For very fast cut-off, your ladder logic can use the TPO signal transferred to the input image. The module provides auto-tuning of PID loops (optimized for tuning barrel temperature control loops), self-calibration (external reference required) self-diagnostics, and detection of input open-circuit (including thermocouple break). | ||||||
| ⋆ This module is compatible only with an SLC 5/03, SLC 5/04, or SLC 5/05 processor in a local I/O chassis. ‡ This module is compatible only with an SLC 5/02, SLC 5/03, SLC 5/04, or SLC 5/05 processor in a local I/O chassis. |
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1746 Positioning I/O Modules
| Cat. No. | Inputs | Input Frequency, Max. | Outputs | Module Update Time | Slots | Backplane Current Load | I/O Connection |
| 1746-HSCE⋆ High-Speed Counter Module |
1 count input (5V DC, 12V DC or 24V DC) |
50 kHz for Range 32 kHz for Rate 50 kHz for Sequencer |
4 outputs (5V DC, 12V DC, or 24V DC) |
Sequencer mode: 1.8 ms Range mode: 3.9 ms Rate mode: 70.0 ms + rate period |
1 | 320 mA at 5V DC | 1746-RT25G |
| Description — The high-speed counter module is used in control applications where the ability to detect high-speed machine or process motion is critical. It has a 16-bit counter to accept bidirectional input pulse frequencies of up to 50 kHz from encoders and other high-speed switching devices. It has 4 open-collector (sink) outputs so that the control loop is closed on the module without going through I/O or program scan delays. The module has three modes of operation: range, rate, and sequencer. Typical applications include packaging, material handling, flow monitoring, cut-to-length, motor speed control, and machining. | |||||||
| 1746-HSCE2⋆ High-Speed Counter Module |
4 single-ended or 2 differential quadrature inputs (5V DC, 12V DC or 24V DC) |
1 MHz | 4 outputs (5V DC, 12V DC, or 24V DC source) |
1.5 ms | 1 | 250 mA at 5V DC | 1746-RT25G |
| Description — The high-speed counter module is used in control applications where the ability to detect high-speed machine or process motion is critical. It has 4 counters, but only 2 can be used with quadrature inputs. When configured for class-1 operation with any SLC processor, it provides 16-bit counters with 8 input words and 8 output words. When configured for class 4 operation, it provides 24-bit counters for count ranges of ±8,388, 607 with 23 input words and 8 output words. It has 4 source outputs so that the control loop is closed on the module without going through I/O or program scan delays. Typical applications include packaging, material handling, flow monitoring, cut-to-length, motor speed control, and machining. | |||||||
| 1746-HSRV SLC Servo Control Module |
3 general purpose local fast inputs (24V DC) |
300 kHz at 0° quadrature error | 1 general purpose local fast output (24V DC) |
2 ms | 1 | 300 mA at 5V DC | 1746-HT termination panel and 1746-HCA cable |
| Description — This module provides an analog velocity command with programmable limits up to ±10V DC to interface with a variety of Rockwell Automation servo drives. It lets you execute and sequence individual motion commands or one of 16 motion profiles of up to 32 segments for complex motion profiles. The module operates in two modes: Configuration and Command. Compatible with SLC 5/03, 5/04, and 5/05 processors. It does not function in an I/O chassis remote from the processor. | |||||||
| 1746-HSTP1 SLC Stepper Controller Module |
Differential (5V DC) encoder, single-ended (12…24V DC) auxiliary | 250 kHz | Digital output for translator | 4 ms | 1 | 200 mA at 5V DC 90 mA at 24V DC |
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| Description — This module provides a low-cost solution for a single-axis, open-loop application. The module can provide an absolute position of over ±8,000,000 increments, and pulse-train velocities of up to 250 kHz. The module is compatible with translators with differential inputs, single-ended TTL and opto-coupler interfaces. The module is configurable for pulse train and direction bit or clockwise/counter-clockwise pulse-train outputs. The module operates in three modes: Configuration, Command, and Diagnostic. Digital encoder and auxiliary (home limit switch; home proximity; CW travel limit; CCW travel limit; pulse-train enable; emergency stop) inputs. It is compatible with SLC 500, 5/01, 5/02, 5/03, 5/04, and 5/05 processors. | |||||||
| 1746-QS⋆ Synchronized Axis Control Module |
4 linear displacement transducers | 220 inches at 0.002-inch resolution | 4 analog outputs (±10V DC) |
2 ms | 1 | 1000 mA at 5V DC 200 mA at 24V DC |
1492-AIFMQS and a cable‡ |
| Description — The 1746-QS module provides closed-loop synchronized positioning control of 4 hydraulic rams and lets you change motion parameters while the axis is moving. For each axis, the module accepts an input from a linear displacement transducer and provides a ±10V output to interface with proportional or servo valve amplifiers. The module is designed for use with the Hydraulic Configurator, a software product that you can obtain from the Allen-Bradley web site on the Internet. The Hydraulic Configurator is an interactive executable that lets you configure the module and tune its axes. The Hydraulic Configurator saves considerable time when troubleshooting or tuning axes. Applications include: plywood presses, roll positioning, palletizers and stackers, forges, and hydraulic tailgate loaders. | |||||||
| 1746-QV⋆ Open-Loop Velocity Control Module |
1 linear displacement transducer | 160 inches at 0.01-inch resolution | 1 analog output (0…10V DC or ±10V DC) |
2 ms | 1 | 215 mA at 5V DC | 1746-RT27 (input) 1746-RT26 (output) |
| Description — The 1746-QV module is part of an SLC-based open-loop control system for controlling the speed and placement of a hydraulic ram. The module accepts motion profiles that you program into the SLC processor and monitors an input from a linear displacement transducer. The SLC processor sends to the module a pair of extend and retract profiles that define when to accelerate or decelerate hydraulic motion. This ability to program these changes of speed reduces cycle time and reduces or eliminates pressure spikes and water-hammering for smoother operation and less wear and tear on the machine. This also saves energy and enables faster new-part change-over. The module fits simple hydraulic applications including simple hydraulic presses, die-casting machines, and weld-head placement. The module provides OEMs and system integrators with a less complex way to match hydraulic cylinder pressure or speed with application requirements. | |||||||
| ⋆ This module is compatible only with an SLC 5/02, SLC 5/03, SLC 5/04, or SLC 5/05 processor in a local I/O chassis. ‡ Cables: 1492-ACABLE005Q (0.5 m), 1492-ACABLE010Q (1.0 m), 1492-ACABLE015Q (1.5 m), 1492-ACABLE025Q (2.5 m). |
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Removable Terminal Blocks
Many 1746 I/O modules provide color-coded removable terminal blocks. These removable terminal blocks let you replace I/O modules without rewiring. A matching color band on the front of the module helps you match the terminal block to the correct type of module. Each terminal block includes self-lifting pressure plates for secure wiring and has barriers on 3 sides to guard against AC cidental shorting of wiring.
1746 Removable Terminal Blocks
| Cat. No. | Number of I/O, Max. | Number of Terminals | Contact Plating |
Fuse Size, Max. | Typical Application |
| 1746-RT25R | 16 | 18 | Gold Plated | — | General-purpose red terminal block, used with AC I/O modules 1746-IA16, -IM16, -OA16, -OAP12 |
| 1746-RT25B | 16 | 18 | Gold Plated | — | General-purpose blue terminal block, used with DC I/O modules 1746-IB16, -IC16, -IH16, -ITB16, -ITV16, -IV16, -OB16, -OBP16, -OBP8, -OV16, -OVP16, -IN16, -IG16, -OG16 |
| 1746-RT25C | 16 | 18 | Gold Plated | — | General-purpose orange terminal block, used with relay contact output modules 1746-OW16, -OX8 |
| 1746-RT25G | 16 | 18 | Gold Plated | — | General-purpose/specialty green terminal block, used with specialty I/O modules 1746-HSCE, -HSCE2, -IO12, -NR4, -NI8, -NI16I, -NI16V, -NO8I, -NO8V |
| 1746-RT26 | — | 2 | Gold Plated | — | External power source terminal block, used with analog output modules 1746-NO4I, -NO4V |
| 1746-RT27 | 4 | 8 | Gold Plated | — | Used with analog output modules 1746-NO4I, -NO4V |
| 1746-RT28 | 4 | 12 | Gold Plated | — | Used with analog input/combo modules 1746-NI4, -NIO4I, -NIO4V |
| 1746-RT32 | 4 | 18 | Gold Plated | — | Green terminal block, used with thermocouple input module 1746-NT4 |
Distributed I/O
In addition to controlling/monitoring 1746 I/O in the local chassis and in remote chassis AC ross a ControlNet or Universal Remote I/O link, the SLC processor can control/monitor I/O in remote locations on a variety of platforms distributed AC ross ControlNet, DeviceNet and Universal Remote I/O links.
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| For information on selecting: | For use across a: | See this section: |
| 1771 I/O modules (plus their I/O adapter modules, chassis, and power supplies) | ControlNet or Universal Remote I/O link | PLC-5 System |
| 1734 I/O modules (plus their I/O adapter modules, bases, and power supplies), 1790 I/O blocks, 1791D I/O blocks, 1792 I/O blocks, or 1798 I/O modules (plus their I/O adapter modules and base plates) | DeviceNet I/O link | I/O |
| 1769 I/O modules (plus their I/O adapter modules and power supplies) | DeviceNet I/O link | CompactLogix System |
| 1794 or 1797 I/O modules (plus their I/O adapter modules, terminal bases, and power supplies) | ControlNet, DeviceNet, or Universal Remote I/O link | I/O |