Operation
21
Function
Contact closed: Rotor speed has attained 80% of its nominal speed. (= nor-
mal operation). The relay picks up as soon as the normal operation threshold is
attained.
Outputs an error message. When the error relay switches, the pump is shut down.
The relay is energised in the case of normal operation.
Possible error causes:
n The pump was overloaded for a longer period of time.
n The minimum rotational speed was not attained within a limited period of time.
n The speed has dropped below the lower limit.
n The rotor or bearing temperature is above the fault limit.
n Internal electrical error.
Switches when the pump is being driven, the pump is running up.
Switches when: start command is present, no error and mains power on.
Can be used to control a valve or the backing pump.
Supplies a start signal for the connected fan, if Parameter 318 has been set to 3.
Upon delivery: The relay picks up as soon as normal operation is attained (motor
current≤normalcurrentthreshold).
Contact rating: 2A / 50V DC max. (resistive load)
Pin Relay
10 Normal n.o.
11 Normal com.
8 Fault n.o.
9 Fault com.
21 Fault n.c.
Optional relay 1
23 Run-up n.o.
16 Run-up com.
Optional relay 2
12 Valve and
forevacuum n.o.
13 Valve and
forevacuum com.
Optional relay 3
18 Fan n.o.
19 Fan com.
20 Fan n.c.
Relays
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