1. Loosen screws [1] and remove plug/socket connector [2].
2. Pull fuse holder [3] out of pin carrier, open fuse cover and replace old fuses by
new ones.
Fuses F3/F4: test/replace
1. Loosen screws [1] and remove cover [2] on the rear of the actuator controls.
The power supply unit has measurement points (solder pins) allowing to perform
a resistance (continuity) measurement:
Measuring pointsVerifying
MTP5 – MTP6F3
MTP7 – MTP8F4
2. To replace defective fuses:. Carefully loosen power supply unit [3] and pull out.
(The fuses are on the equipped part of the power supply board).
Cable damage due to pinching!
Risk of functional failures.
→
Carefully assemble power supply unit to avoid pinching the cables.
10.3.2. Motor protection (thermal monitoring)
In order to protect against overheating and impermissibly high surface temperatures
at the actuator, PTC thermistors or thermoswitches are embedded in the motor
winding.The thermoswitch is tripped as soon as the max. permissible winding
temperature has been reached.
The actuator is switched off and the following signals are given:
●
LED 3 (thermal fault) on the local controls is illuminated.
53
SQ 05.2 – SQ 14.2/SQR 05.2 – SQR 14.2 Control unit: electronic (MWG)
AC 01.2 Non-Intrusive Corrective action
To Next Page
Loading...
Need help?
General
