Allen-Bradley Guardmaster 440R-S35011, Installation Instructions, Page: 4 / 4

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Publication 440R-IN081B-EN-P - February 2020 10005051946 Ver 01
Supersedes Publication 440R-IN081A-EN-P - June 2019 Copyright © 2020 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
Table 3 - T
s
Delay Time Settings
Status Indicators and Diagnostics
Three indicators on the front provide the operating status of the
MSR55P standstill module safety relay. Table 4 describes the state of
each indicator.
Table 4 - Status Indicators
MSR55P standstill module safety relays include a number of facilities to
detect faults that could influence the safety function of the module.
Checks are conducted on power- up of the unit and in cycles during
normal operation. If a fault occurs, the output relays switch off. The
fault state is indicated with the ERR indicator, the PWR indicator, and
the semiconductor output ERR.
With safety relevant failures, your MSR55P standstill module safety
relay differentiates between external failures (broken wire/offset,
simultaneity failure, or feedback circuit failure) and internal failures.
Broken wire/offset failures and feedback circuit failures can be restored
by using manual reset. They can also be reset automatically after
removing the fault by placing a jumper from terminal X2 toX3.
The number of times the ERR status indicator blinks communicates
diagnostics. When multiple faults exist simultaneously, the ERR
indicator shows the highest priority. After the highest priority fault is
corrected, the ERR shows the next highest priority fault.
Figure 3 - ERR Flashing Codes
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Waste Electrical and Electronic Equipment (WEEE)
Position Delay Time [seconds]
1 0.2
2 0.3
3 0.5
4 0.7
5 1.0
6 1.5
7 2.0
8 3.0
9 4.0
10 6.0
Indicator State Description
PWR
Off No power to A1
Green Normal operation
Red Internal Fault
OUT
Green Safety outputs are energized
Flashing green In timing cycle
Flashing orange Intermittent crossing of the V
m
trip point
Orange Safety outputs are de-energized
Off Code 1 or code 5 error is present
ERR
Off No faults exist; normal operation
Flashing red Fault is present (see Figure 3 )
At the end of life, this equipment should be collected separately
from any unsorted municipal waste.
Flashing codes of the ERR indicator in sequence of priority
t
2 s 0 s 4 s
1) Undervoltage at PWR
2) Wire-break/offset on L1 or L2
3) Wire-break/offset on L3
4) Failure in feedback circuit X1-X2
5) Simultaneity failure signal L2/L3
6) Potentiometer error V
m
7) Potentiometer error t
s