MSR820V
12400-0701-00
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2
Display and controls
2.1 Green LED Mains
on
Device is switched on
off
Device is switched off
2.2 Yellow LED Relay status
on
Relay is energized,
contacts 11/14 (K1) or 21/24 (K2) are
closed
off
Relay has de-energized,
contacts 11/12 (K1) or 21/22 (K2) are
closed
2.3 Reset button (for Sensor Select on/off)
•
Resetting an alarm message
•
In Sensor Select operation: Switching the selected sensor on or off
•
Press and hold ≥ 2s when mains is turned on -> Factory Reset
•
Press and hold ≥ 10s when mains is turned on -> Device configuration
2.4 Sensor Select button
•
Selection of a PTC thermistor circuit
o
The corresponding red LED flashes quickly
o
Press the On/Off (reset) button to turn the circuit off or on
o
The green LED indicates the status (on/ off)
o
Button ≥ 2s pressed, return to normal operation
o
≥ 5s no button actuation, return to normal operation
2.5 Red sensor LEDs T1 .. T8
on
no tripping in the PTC thermistor circuit
off
Resistance in the PTC circuit > 3650 Ohm
(tripping)
flashes
after a tripping -
Resistance in the PTC thermistor circuit < 1600 Ohm, device is ready to be switched
back
flashes
quickly
PTC thermistor circuit was selected with Sensor Select button, with On/Off (Reset)
button the circuit can be switched on/off (green LED on/off)
2.6 Green sensor LEDs T1 .. T8
on
PTC thermistor circuit is switched on
off
PTC thermistor circuit is switched off
flashes
Sensor short circuit in the PTC thermistor circuit
3
Factory setting
Function ext. Reset:
N/O contact
Relay function:
K1, K2 Quiescent current
Zero-voltage safe restart interlock: OFF
Short-circuit monitoring:
OFF
