Servomotor With Analogue Control; Circuit Diagram; Commissioning; Checks Before Commissioning - Grundfos 384-511 Instrucciones De Instalación Y Funcionamiento

10.3 Servomotor with analogue control

10.3.1 Circuit diagram

51 52
L N
-
+
L1 N PE
4(0) - 20 mA
Fig. 9 Circuit diagram for a servomotor with
analogue control
Item Description
L Phase
Supply voltage input
N Neutral
PE (earth)
51 Signal input (-)
52 Signal input (+)
54 Signal output (-)
55 Signal output (+)
56
Collective error message
57
10.3.2 Electrical connection
Observe the information contained in
Note
section 10.1 General warnings and notes
on the electrical
1. Unscrew the hood screws and remove the hood.
2. Establish the electrical connections in
accordance with the circuit diagram; see fig. 9.
– Connect terminals 51 and 52 and, if required,
terminals 54 and 55, in accordance with the
circuit diagram.
– Connect terminals 56 and 57 in accordance
with requirements; voltage 125 V max.
– Use separate, shielded lines with a minimum
cross-section of 0.5 mm
length of 1000 m for low voltages
(setpoint/actual value signal lines).
– The screen must be connected on one side to
the housing earth (earth terminal).
Warning
The internal wiring of the drive must never
be modified.
• Close the hood again and tighten the hood
screws.
16
54 55 56 57
-
+
max. 125 V
fault message
connection.
2
and a maximum

11. Commissioning

Warning
The drive may only be commissioned if the
hood and cable entries are properly
closed.
Warning
Please note that the process of
commissioning the drive will cause
associated fittings/levers/rodding to move.
Warning
Check that all emergency
equipment/functions on your
machine/installation are working correctly.
Warning
Once all adjustment work has been
completed, check that the drive and the
fittings/levers, etc. operated by it are
working correctly.
Warning
Never work with a damaged drive.
When commissioning, all the installation's
Caution
components must be ready for operation.
Follow the installation and operating
Note
instructions for the components used.

11.1 Checks before commissioning

Before setting the servomotor to automatic
Caution operation, check the min./max. position
and the direction of rotation.

11.1.1 Checking the direction of rotation

The servomotor is controlled by an external
controller. This means that the servomotor's direction
of rotation depends on the controller's cabling and
settings being correct.
Observe the installation and operating
Note
instructions for the controller and the
dosing pump.