Specifications

5.4.7 Relay Output E & F-Frame
Relay 1
•
Terminal 01: common
•
Terminal 02: normally open 240 V AC
•
Terminal 03: normally closed 240 V AC
Relay 2
•
Terminal 04: common
•
Terminal 05: normally open 400 V AC
•
Terminal 06: normally closed 240 V AC
Relay 1 and relay 2 are programmed in 5-40 Function Relay,
5-41 On Delay, Relay, and 5-42 Off Delay, Relay.
Use option module MCB 105 for additional relay outputs.
relay1
relay2
03
02
240Vac, 2A
240Vac, 2A
400Vac, 2A
01
06
05
04
130BA047.10
Illustration 5.98 E- and F-Frame Additional Relay Outputs
5.4.8 Parallel Connection of Motors
The frequency converter can control several parallel-
connected motors. The total current consumption of the
motors must not exceed the rated output current I
INV
for
the frequency converter.
When motors are connected in parallel, P-04 Auto Tune
cannot be used.
Small motors have relatively high ohmic resistance in the
stator, which can cause problems at start and low RPM.
The electronic thermal relay (ETR) of the frequency
converter cannot be used as motor protection for the
individual motor of systems with parallel-connected
motors. Provide further motor protection by e.g.
thermistors in each motor or individual thermal relays.
(Circuit breakers are not suitable as protection).
LC lter
130BA170.10
Illustration 5.99 Correct Parallel Motor Connection
How to Install VLT® HVAC Drive FC 102 Design Guide
MG16C102 - Rev. 2013-08-20 147
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