46
MRBP.424321.001G2 Version 1.0 15/06/2020
Display image
Audio signal
Green LED
«
Work
»
Red LED
«
Alarm
»
Relay
Thresh-
old 1
Relay
Thresh-
old 2
Relay
Failure
Description
ternal channel.
every 1 s
on
flashes
every 1 s
NC
NC
NC
Current loop in the channel power supply cir-
cuit (absorbed current exceeds 1,25A).
Channel power supply disconnected.
It is necessary to eliminate short circuit cause
and reboot channel power supply.
every 1 s
on
flashes
every 1 s
NC
NC
NC
Current in the current loop circuit exceeds 31
mA.
It is necessary to eliminate short circuit in the
current loop circuit cause, after that the chan-
nel resumes work in main operation mode au-
tomatically.
every 1 s
on
flashes
every 1 s
NC
NC
NC
If the current in the current loop circuit is less
than:
-
0.35 mA at channel initialization;
-
3.7 mA in main operation mode.
No communication with detector via an ex-
ternal channel.
every 1/2
s
on
flashes
every 1/2
s
NO
NC
NO
Measurand value is greater than threshold 1
value.
Work resume in main operation mode is per-
formed automatically, after measurand de-
creasing below threshold 1 taking account of
hysteresis.
