Servomotor Type SQN 7...
dreizler A 3001 E - 18.12.2015 | A 2025 - 2.14 | EN - 11.11.2014
53
NOTICE:
Cam III can ignite the burner at a larger angle (e.g. 40°) than cam II (more gas at ignition). Cam III
should not be used where that is not desired (cam III must then be depressed - MIN load).
The switching roller of the servomotor and with it the air damper can be moved electrically, or uncoupled
from the gear box after depressing the locking bolt, and then moved or set manually.
16.4 Potentiometer for SQN 7..., type ASZ...
Single potentiometer as conductive version. The potentiometer ASZ... is designed to provide elec-
trical signal impulses for the actuator axis positions.
The potentiometer ASZ ... is installed on the drive axis of actuator SQN 7... and used for position display
and position feedback purposes.
NOTICE:
Single potentiometer as conductive version ASZ 12.803:
1000
, current carrying capacity
0.1 mA
Also available as double potentiometer type ASZ 22...
CAUTION!
Comply with max. current capacity 100
.
Fig. 16-3 Potentiometer ASZ 12...
1
Potentiometer plate
2
Bush with slotted screw
3
Marking arrow
16.5 Retrofitting the servomotor for potentiometer operation
The servomotor SQN 7... can be retrofitted with a potentiometer of type ASZ...
NOTICE:
When retrofitting a SQN 7... with a potentiometer ASZxx.3x, the lid of the SQN 7... must be replaced.
Remove the cover after unscrewing the slot screw in the centre of the cover.
Remove the control panel.
Screw in a distance sleeve for a higher lid into the servomotor housing.
Insert potentiometer into the shaft of the switching roller. Adjust and later fix the adjustable bearing bush
with its slot screw.
