AUMA SQ 05.2 Operation Instructions

11.3.2.2. Test/replace fuses F3/F4
Information: For version with electrical connection type KP/KPH, the fuses
(F1/F2) are also located on the PSU board.
1. Loosen screws [1] and remove cover [2] on the rear of the actuator controls.
Figure 76:
Check fuses.
2. The power supply unit has measurement points (solder pins) allowing to perform
a resistance (continuity) measurement:
Table 34:
Measuring pointsChecking
MTP1 – MTP2F1
MTP3 – MTP4F2
MTP5 – MTP6F3
MTP7 – MTP8F4
3. 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.
11.3.3. 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. Motor protection trips as soon as the max. permissible winding temperature
has been reached.
The actuator is switched off and the following signals are given:
●
LED 3 (motor protection trippped) on the local controls is illuminated.
●
The status indication S0007 or S0011 Failuredisplays a fault..
The fault Details is displayed when selecting Thermal fault.
The motor has to cool down before operation can be resumed.
Depending on the parameter setting (motor protection behaviour), the fault signal is
either automatically reset or the the fault signal has to be reset using RESET push
button with selector switch position Local operation (LOCAL).
Proof-test motor protection
Test correct functioning of the motor protection as described hereafter. Perform the
functional test at the latest within the framework of maintenance (refer to chapter
<Servicing and maintenance>).
The test is performed by simulating the motor protection signal via actuator controls
local controls:
77
SQEx 05.2 – SQEx 14.2 / SQREx 05.2 – SQREx 14.2 Control unit - electromechanical
ACExC 01.2 Intrusive Corrective action

AUMA SQ 05.2 Specifications

General

Brand	AUMA
Model	SQ 05.2
Category	Controller
Language	English