MSR178DP
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Description
The MSR178DP is a multi-function time-delay relay for use in safety circuits. It can be configured by the user to perform on-delay, off-delay or single-pulse modes. It is used for applications such as delayed unlocking of safety gates, delayed de-energizing of variable speed controlled motors, or jogging (single pulse) in teaching or setup mode.
The MSR178DP can be used e.g. in conjunction with a power to release or power to lock guard locking switch to time out high inertia machines with significant run down in potentially dangerous equipment. The single-pulse mode enables implementation of two-hand control by use of two normally open contacts. It also can be used as a preset time limited mute dependent bypass in order to clear a blockage in the muting sensor area.
The operating function is selected by external jumpers to Y21 and Y22. The delay time is selected by a combination of external jumpers to Y31 and Y32 and the potentiometer located on the front face.
The input to the MSR178DP can be connected in five different configurations: one normally closed, two normally closed, one normally open, two normally open, or two PNP connections from a light curtain. The normally closed connections are used for off-delay timing. The normally open inputs are used for on-delay timing and the single-pulse function. To generate the single pulse both inputs must be closed within 0.5 seconds. Thus a two-hand control arrangement in accordance with EN 574 Cat. IIIA can be used to trigger the single pulse.
The MSR178DP has three normally open redundant safety outputs. The two normally closed outputs can be connected in series to achieve redundant safety or connected in parallel for auxiliary signaling. External devices can be monitored by the Y11 terminal. Power to the MSR178DP can be either 24V AC/DC (24V/GND terminals) or 115V AC (A3/A2 terminals), or 230V AC (A1/A2 terminals).
The MSR178DP can be used as a standalone control module or in combination with an MSR safety relay to combine instant and delayed safety outputs, as needed.
Features
- Category 4 per EN 954-1
- Stop category 1
- On-/off-delayed, or single-pulse (one shot) operation
- Four time ranges up to 30 mins.
Specifications
| Safety Ratings | |
| Standards | EN 954-1, IEC 61508, EN IEC 62061, ISO 13849-1, IEC/EN 60204-1, IEC 60947-5-1, EN 61812-1, AS 4024.1, ISOTR 12100, B11.19 |
| Safety Classification | Cat. 4 per EN 954-1 (ISO 13849-1), SIL CL3 per EN IEC 62061, PLe per ISO 13849-1 |
| Functional Safety Data ⋆ Note: For up-to-date information, visit http://www.ab.com/safety/ |
PFHD: < 2.74 x 10-9 MTTFd: > 285 years Suitable for performance levels Ple (according to ISO 13849-1:2006) and for use in SIL3 systems (according to IEC 62061) depending on the architecture and application characteristics |
| Certifications | CE Marked for all applicable directives, cULus, c-Tick, and TÜV |
| Power Supply | |
| Input Power Entry | 24V AC/DC, 115/230V AC 50/60 Hz |
| Power Consumption | 4 W |
| Inputs | |
| Safety Inputs | 1 or 2 N.O., 1 or 2 N.C., Light Curtain |
| Input Simultaneity | Infinite for On-/Off-delay, 0.5 s for single pulse function |
| Input Resistance, Max. | 900 W |
| Reset | Automatic |
| Power On Delay/ Recovery Time |
500 ms/300 ms single pulse only |
| Response Time | <±0.5% (at constant temp) |
| Outputs | |
| Safety Contacts | 3 N.O. |
| Auxiliary Contacts | 2 N.C. |
| Thermal CurrentIlth | 6 A |
| Rated Impulse withstand Voltage | 2500V |
| Switching Current @ Voltage, Min. | 10 mA @ 10V DC |
| Fuses, Output | External 6 A slow blow or 10 A quick blow |
| Electrical Life (Operations) | 230V AC/4 A/880VA cosf = 0.35…0.1 M 230V AC/1.7 A375VA cosf = 0.6…0.5 M 30V DC/2 A/60 W = 1 M 10V DC/0.01 A/0.1 W = 2 M |
| Mechanical Life | 2,000,000 operations |
| Utilization Category | |
| Inductive: AC-15 | 6 A/250V AC |
| Inductive: DC-13 | 3 A/24V DC |
| UL: | B300, 6 A/250V AC, 3 A/24V DC |
| Environmental and Physical Characteristics | |
| Enclosure Type Rating/ Terminal Protection |
IP40 (NEMA 1), DIN VDE 0470-1/ IP20 |
| Operating Temperature [C (F)] | -5…+55 ° (14…131 °) |
| Vibration | 10…55 Hz, 0.35 mm |
| Shock | 10 g, 16 ms, 100 shocks |
| Mounting | 35 mm DIN Rail |
| Weight [g (lb)] | 325 (0.72) |
| Conductor Size, Max. | 0.2…4 mm2 (24… 12 AWG) |
| ⋆ Usable for ISO 13849-1:2006 and IEC 62061. Data is based on the following assumptions: - Mission time/Proof test interval of 20 years - Functional test at least once within six-month period |
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Product Selection
| Inputs | Safety Outputs | Auxiliary Outputs | Terminals | Reset Type | Power Supply | Cat. No. |
| 1 or 2 N.O., 1 or 2 N.C., Light Curtain, Two-Hand Control, Enabling Switch | 3 N.O. | 2 N.C. | Removable | Automatic | 24V AC/DC, 115V AC or 230V AC | 440R-M23227 |
Accessories
| Description | Cat. No. |
| Bag of 4, 3-Pin Screw Terminal Blocks | 440R-A23210 |
| Bag of 4, 3-Pin Spring Clamp Terminal Blocks | 440R-A23229 |
LED Indicators
| PWR: Green | Power on |
| Flashing Green/Red | Faillure |
| CH1/2 IN: Static Green | Input closed |
| Flashing Green | Time lapse |
| CHT1: Green | Output CH1 Active |
| CHT2: Green | Output CH2 Active |
Approximate Dimensions
Dimensions are shown in mm (in.). Dimensions are not intended to be used for installation purposes.
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Block Diagram
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Typical Wiring Diagrams
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MSR178DP generates OFF-delayed solenoid release after E-Stop on MSR127 |
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MSR178DP ON-delayed unlocking the Gate after maintained stop switch pressed |
Jumper Configuration
| Operating Function | |
| Y10…Y21 Y10…Y22 B11…Y22 |
ON Delay OFF Delay Single Pulse |
| Time Range | |
| — Y10…Y31 Y10…Y32 Y10…Y31…Y32 |
0.5…10 s 1…30 s 5…300 s 1…30 min |
| Cross Fault Detection on Inputs | |
| — B11…B21 |
Enabled Disabled |
| Feedback Loop | |
| Y10…Y11 | Close before reset |
Time Function Diagrams
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