
Device description
Leuze electronic
MSI-TRMB
12
3.3
Error display
Table 3.2:
Error display via LEDs
PWR
Green
Power on
PWR
Green, flashing
Supply voltage not correct (see chapter 14.1 "Gen
Fault
Red
Internal or external fault (see chapter 3.3 "Error
LED
Color
Description
LED indicator
Errors and possible causes Remedial measures
Fault
IN1, IN2
OUT1, OUT2
On
Flashing
Off
Start button / bridge is (with
automatic, non-monitored
start) not connected to S21
Disconnect device from
power supply, check for wir
-
ing faults, replace device if
defective
Change of start condition
during operation
On
Off
Flashing
alternately
Output S11/S21 short-circuit
to GND
Disconnect device from
power supply, check wiring,
replace device if defective or
check connected ESPE
Output S11/S21 short-circuit
to VCC
Incorrect input signals, incor
-
rect operating mode
Reaction time of ESPE is
longer than 8.5 ms
Cross-circuit between S11
and S21 or S12 and S22
Short-circuit of triggering ele
-
ments in the case of ESPE
applications
On
Off
Flashing
Error during relay test –
internal relay defective /
fused together
Disconnect device from
power supply, check con
-
nections at relay contacts,
check max. output capability
specifications"), replace
device if defective