6.13 Electrical Installation and Control Cables
Terminal number
Terminal description
Parameter number
Factory default
1+2+3
Terminal 1+2+3 - Relay1
5-40
No operation
12
Terminal 12 Supply
-
+24 V DC
18
Terminal 18 Digital Input
5-10
Start
19
Terminal 19 Digital Input
5-11
Reversing
20
Terminal 20 Common Digital Ground
-
Common
27
Terminal 27 Digital Input
5-12
Reset
29
Terminal 29 Digital Input
5-13
Jog
33
Terminal 33 Digital Input
5-15
Preset ref bit 0
42
Terminal 42 Analog Output/Digital
Output
6-9*
No operation
50
Terminal 50 Supply for Analog Input
-
+10 V DC
53
Terminal 53 Analog Input (Voltage or
Current)
3-15/6-1*
Reference
55
Terminal 55 Common Analog Ground
-
Common
60
Terminal 60 Current Input
3-16/6-2*
Reference
Table 6.4 Terminal Connections
Very long control cables and analog signals may, in rare
cases and depending on installation, result in 50/60 Hz
earth loops due to noise from mains supply cables.
If this occurs, break the screen or insert a 100 nF capacitor
between screen and chassis.
NOTE
The common of digital/analog inputs and outputs should
be connected to separate common terminals 20, 39, and
55. This avoids ground current interference among groups.
For example, it avoids switching on digital inputs
disturbing analog inputs.
NOTE
Control cables must be screened/armoured.
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
NOTE
See back of terminal cover for outlines of control terminals
and switches.
How to Install
VLT
®
Micro Drive FC 51 Design Guide
MG02K202 - VLT
®
is a registered Danfoss trademark
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