Dräger REGARD - Relay and Communication Testing

REGARD 8-Input 4-20 Module & 8-Channel Display Card (ATEX Version)
Issue 2. October 2011
34
Test alarm relays
The A1, A2 and Fault relays can be operated manually, to test alarms. Command 14–4
(test A1 relay) is described here: commands 14–5 (test A2 relay) and 14–6 (test Fault
relay) are identical.
PRESS DISPLAY
• Select command 14–4
  R
A1 TEST
Display shows status of relay: e.g.
A1: ON
ON : relay energised
OFF : relay de-energised
• Change state of relay
 
A1: OFF
• End test
R
14–4
Test communications with 8-input module
PRESS DISPLAY
• Select command 14–8
  R
TEST MOD
Display shows number of data packets received
123
• To reset count to zero:
 
0
• End test
R
14–8
Disable alarm relays
The A1 and A2 alarm relays can be disabled, to prevent alarms being activated during
maintenance. When disabled, the relay will always stay in its non-alarm state.
Command 60–4 (disable A1 relay) is described here: command 60–5 (disable A2 relay) is
identical in operation.
PRESS DISPLAY
• Select command 60–4
  R
A1 DIS.
NO
• Select YES to disable relay
 
YES
• Confirm selection and exit command
R
DISABLED
60–4
The Fault relay will be tripped when one or more relays are disabled, even in normal
mode.
Inhibit LED blinks to indicate that one or more relays are disabled.
Warning: a disabled relay will not indicate a gas alarm or fault alarm.