5
Startup
Installation and setup of optional equipment
Operating Instructions – Explosion-Proof VARIMOT
®
Variable Speed Gear Units and Accessories
27
Installing/
connecting the
IGEX voltage
encoder
1. Rotate the output shaft of the variable speed gear unit until the machined casting
surface of the friction ring carrier can be seen through the tapped hole in the gear unit
housing.
2. Voltage encoder:
• Carefully screw the voltage encoder into the thread of the variable speed gear unit
housing until the voltage encoder [3] rests on the friction ring carrier.
• Turn the encoder back by one turn and secure with lock nut [2].
The switching interval X is now set as follows:
• For VARIMOT
®
D16/26 to 1 mm
• For VARIMOT
®
D36/46 to 2 mm
During operation, the voltage encoder supplies six pulses per revolution at this
switching interval.
3. Connect the voltage encoder to the WEX speed monitor as follows:
• VARIMOT
®
D16/26 via terminal strips in the terminal box
• VARIMOT
®
D36/46 via plug connector
52022AXX
Fig. 10: Setting the switching interval X for VARIMOT
®
D16/26 in the terminal box
[1]
Terminal box
[3]
Voltage encoder
[2]
Lock nut
52023AXX
Fig. 11: Setting the switching interval X for VARIMOT
®
D36/46 via plug connector
[1]
Plug connector
[3]
Voltage encoder
[2]
Lock nut
X
[1]
[3]
[2]
X
[1]
[2]
[3]
0
0
I
