20
C6.2.26/1013-1116/E
L1/T1 neutral connection
L2/T2 line voltage connection
S1, S2 thermistor chain connection
M1, M2 control circuit connection
Figure 19: Wiring of the motor protection
module
a winding head at the lower end of the motor. The entire chain is internally led to the fusite from
where it is connected to the module connections S1 and S2. When any resistance of the
thermistor chain reaches the tripping value, the module interrupts the control line and causes the
compressor to switch off. After the thermistor has cooled sufficiently, its resistance drops to the
reset value but the module itself resets after a time delay of 30 minutes and restarts the
compressor.
Control circuit wiring
IMPORTANT
Different sources for power supply and contact M1-M2! Module
malfunction!
Use the same potential for power supply and the switch
contact of the control loop (M1-M2).
Supply voltage: Dual voltage
115-230V AC 50 Hz, -15%...+10%, 3VA
120-240V AC 60 Hz, -15%...+10%, 3VA
Supply voltage
24V AC 50/60 Hz, -15%...+10%, 3VA
24V DC
20%, 2W
Ambient temperature range
-
30…+70°C
R
25
, total
< 1,8k
Trip resistance
4.50k
Ω ± 20%
Reset time delay type 1 / type 2
30 min
5 min / 60 min
5 min
Reset of running time
Power interruption / mains failure for approx. 5 sec
Short circuit monitoring system
Typically < 30
Protection class according to EN 60529
IP00
Weight
Approximately 200 g
Mounting
Screw in or snap in
Housing material
PA66 GF25 FR
Table 4: Protection module specifications INT69SU2
4.6 Kriwan protector functional check and failure detection
WARNING
Conductor cables! Electrical shock!
Shut off power supply before and
between each test.
Prior to start-up of the fully connected compressor a functional check shall be carried out:
Disconnect one terminal either S1 or S2 of the protection module. If the compressor is now
switched on, the motor should not start (simulation of an open thermistor chain).
Reconnect the disconnected thermistor line. If the compressor is now switched on, the
motor must start.
