Danfoss VLT AutomationDrive FC 302 - Wiring Configuration for the Encoder; Wire Configuration for Torque and Stop Limit

12.12 Wiring Conguration for the Encoder
The direction of the encoder, identied by looking into the
shaft end, is determined by which order the pulses enter
the drive. See Illustration 12.6.
•
Clockwise (CW) direction means channel A is 90
electrical degrees before channel B.
•
Counterclockwise (CCW) direction means channel
B is 90 electrical degrees before A.
B
A
B
A
130BA646.10
CW
CCW
Illustration 12.6 Determining Encoder Direction
NOTICE
Maximum cable length 5 m (16 ft).
130BA090.12
+24 V DC
A B
GND
1312 18 37322719 29 33 20
24 V or 10–30 V encoder
Illustration 12.7 Wire Conguration for the Encoder
12.13
Wire Conguration for Torque and
Stop Limit
In applications with an external electro-mechanical brake,
such as hoisting applications, it is possible to stop the
drive via a standard stop command and simultaneously
activate the external electro-mechanical brake.
Illustration 12.8 shows the programming of these drive
connections.
If a stop command is active via terminal 18 and the drive
is not at the torque limit, the motor ramps down to 0 Hz.
If the drive is at the torque limit and a stop command is
activated, the system activates terminal 29 output
(programmed to [27] Torque limit & stop). The signal to
terminal 27 changes from logic 1 to logic 0 and the motor
starts to coast. This process ensures that the hoist stops
even if the drive itself cannot handle the required torque,
for example due to excessive overload.
To program the stop and torque limit, connect to the
following terminals:
•
Start/stop via terminal 18
(Parameter 5-10 Terminal 18 Digital Input [8] Start).
•
Quick stop via terminal 27
Application Examples VLT® AutomationDrive FC 302
190 Danfoss A/S © 01/2018 All rights reserved. MG38C202
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