Electronic Trigger Unit Int69 G; Connecting Of The Trigger Unit Int69 G - Danfoss BOCK HG88e Operating Manual

7 | Electrical connection
7.6 Electronic trigger unit INT69 G
The compressor motor is fitted with cold conductor temperature sensors (PTC) connected to the
electronic trigger unit INT69 G in the terminal box. In case of excess temperature in the motor
winding, the INT 69 G deactivates the motor contactor. Once cooled, it can be restarted only if the
electronic lock of the output relay (terminals B1 + B2) is released by interrupting the supply voltage.
The hot gas side of the compressor can also be protected against overtemperature using thermal
protection thermostats
The unit trips when an overload or inadmissible operating conditions occur. Find and remedy
the cause.
INFO
7.7 Connection of the trigger unit INT69 G
D
GB INFO
F
E
I
Ru
24 | AQ451337713574en-000401
(accessory).
The relay switching output is executed as a floating changeover
contact. This electrical circuit operates according to the quiescent
current principle, i.e. the relay drops into a the idle position and
deactivates the motor contactor even in case of a sensor break or
open circuit.
Connect the trigger unit INT69 G in accordance with the circuit dia-
gram. Protect the trigger unit with a delayed-action fuse (F) of max.
4 A. In order to guarantee the protection function, install the trigger
unit as the first element in the control power circuit.
ATTENTION
PTC cable on the trigger unit
INT69 G and terminals PTC 1 and
PTC 2 on the compressor termi-
nal board must not come into
contact with mains voltage.
This would destroy the trigger
unit INT69 G and PTC sensors.
Motor Protection INT69 G
PTC
L N
Lock out
supply
Abb. 14
Terminal box
© Danfoss | Climate Solutions | 2023.10
B1 B2 12 14 11