Connecting An External Controller To A Servomotor With Reversing Potentiometer - Grundfos Vaccuperm VGA-113 Montage- Und Betriebsanleitung

5.4 Connecting an external controller to a servomotor
with reversing potentiometer
5.4.1 Terminal connection diagram servomotor with
reversing potentiometer
SL (max.) SR (min.)
1 2 3 4 5
N
Motor control
Limit switch
Fig. 18 Servomotor with reversing potentiometer
Pos. Description
1 N Neutral
2 Phase Supply voltage input (direction open/max.)
3 Phase Supply voltage input (direction close/min.)
4 Supply voltage output (final position max.)
5 Supply voltage output (final position min.)
PE (earth)
18 Start
19 Slider
20 End
1 2 3 4 5 6 7
Measuring amplifier
IDM
Fig. 19 Terminal connection diagram Conex
18
18 19 20
< 50 V
< 50 V
Reversing potentiometer
Reversing potentiometer
18 19 20
< 50 V
< 50 V
8 9 10 11 12 13 14
®
DIS-2Q
5.4.2 Connecting the external controller Conex
Warning
See section
connection
electrical connection.
1. Unscrew the screws of the servomotor hood, and remove the
hood.
2. Establish electrical connections according to the diagram
shown in fig. 19.
– Connect terminals 18, 19 and 20 in accordance with
requirements; voltage < 50 V.
3. Determine the direction of rotation and correct it, if necessary.
Determining the direction of rotation
According to the internal wiring, the direction of rotation (looking
through the drive towards the output shaft) and limit switches are
assigned as follows:
• If mains voltage is present at terminal 2, the output shaft
rotates counter-clockwise (direction open/max.).
– This direction of rotation is restricted by the upper switch
(max.). If the switch is activated, the mains voltage is
present at terminal 4.
• If mains voltage is present at terminal 3, the output shaft
rotates clockwise (direction close/min.).
– This direction of rotation is restricted by the lower switch
(min.). If the switch is activated, the mains voltage is present
at terminal 5.
• If the drive rotates in the opposite direction to the control
commands, swap over the connections of terminals 2 and 3.
Warning
The internal wiring of the servomotor must never be
modified.
4. Close the hood again and tighten the hood screws.
SL (max.) SR (min.)
4
1 2 3 5
N
15 16 17 18 19 20 21 22 23
Potential-free relay outputs
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DIS-2Q
5.3.1 Warnings and notes for electrical
for warnings and notes relating to
P E
24 25 26
N PE
L1