Motor Protection (Thermal Monitoring) - AUMA SAR 16.2 Operation Instructions Manual

SA 07.2 SA 16.2 / SAR 07.2
AC 01.2 Intrusive
11.3.2.

Motor protection (thermal monitoring)

SAR 16.2 Control unit - electromechanical
1. Loosen screws [1] and remove plug/socket connector [2].
Figure 67:
2. Pull fuse holder [3] out of pin carrier, open fuse cover and replace old fuses by
new ones.
Test/replace fuses F3/F4
1. Loosen screws [1] and remove cover [2] on the rear of the actuator controls.
Figure 68:
The power supply unit has measurement points (solder pins) allowing to perform
a resistance (continuity) measurement:
Table 32:
Verifying
F3
F4
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.
In order to protect against overheating and impermissibly high surface temperatures
at the actuator, PTC thermistors or thermoswitches are embedded in the motor
Corrective action
Measuring points
MTP5 MTP6
MTP7 MTP8
67