Electrical Installation And Control Cables; Control Terminals; Access To Control Terminals - Danfoss VLT Micro Drive FC 51 Design Manual

How to Install

6.13 Electrical Installation and Control Cables

Terminal number
1+2+3
12
18
19
20
27
29
33
42
50
53
55
60
Table 6.3 Terminal Connections
Long control cables and analog signals may, in rare cases
and depending on installation, result in 50/60 Hz ground
loops due to noise from mains supply cables.
If this occurs, break the shield or insert a 100 nF capacitor
between shield and chassis.
NOTICE
To separate common terminals 20, 39, and 55, connect
the common of digital/analog inputs and outputs. This
avoids ground current interference among groups. For
example, it avoids switching on digital inputs disturbing
analog inputs.
NOTICE
Control cables must be shielded/armored.
MG02K402
Design Guide
Terminal description
Relay1
DC 24 V supply
Digital input
Digital input
Common digital ground
Digital input
Digital input
Digital input
Analog output/digital output
Supply for analog input
Analog input (voltage or current)
Common analog ground
Current input
Danfoss A/S © 01/2016 All rights reserved.
Parameter number
5-40
–
5-10
5-11
–
5-12
5-13
5-15
6-9*
–
3-15/6-1*
–
3-16/6-2*

6.14 Control Terminals

6.14.1 Access to Control Terminals

All control cable terminals are located underneath the
terminal cover in front of the frequency converter. Remove
the terminal cover using a screwdriver.
Illustration 6.13 Removing Terminal Cover
NOTICE
See back of terminal cover for outlines of control
terminals and switches.
Factory default
No operation
+24 V DC
Start
Reversing
Common
Reset
Jog
Preset ref bit 0
No operation
+10 V DC
Reference
Common
Reference
51
6 6