SLC 500 System

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I/O Modules and Hardware

I/O Adapter Modules Chassis and Hardware 1746 I/O Module Overview Digital I/O Modules
Analog I/O Modules Specialty I/O Modules Removable Terminal Blocks Distributed I/O
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.

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
  

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.

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
1746-IO12 6 6 90 mA at 5V DC
70 mA at 24V DC
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.