Electrical Installation, Control Cables - Danfoss FC 102 Design Manual

Electrical Installation

6.5.7 Electrical Installation, Control Cables

3-phase
power
input
DC bus
+10 V DC
0/-10 V DC-
+10 V DC
0/4-20 mA
0/-10 V DC -
+10 V DC
6 6
0/4-20 mA
Illustration 6.55 Basic Wiring Schematic
A=Analog, D=Digital
*Terminal 37 (optional) is used for Safe Torque Off. For Safe Torque Off installation instructions, refer to the Safe Torque Off
Operating Instructions for Danfoss VLT
**Do not connect cable screen.
Very 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, it may be necessary to break the screen or insert a 100 nF
capacitor between screen and chassis. The digital and analog inputs and outputs must be connected separately to the
common inputs (terminal 20, 55, 39) of the frequency converter to avoid ground currents from both groups to affect other
groups. For example, switching on the digital input may disturb the analog input signal.
112
Design Guide
91 (L1)
92 (L2)
93 (L3)
95
PE
Switch Mode
88 (-)
Power Supply
89 (+)
10 V DC
15 mA
50 (+10 V OUT)
+
A53
53 (A IN)
ON=0/4-20 mA
A54
OFF=0/-10 V DC -
+10 V DC
54 (A IN)
55 (COM A IN)
12 (+24 V OUT)
13 (+24 V OUT)
P 5-00
24 V (NPN)
18 (D IN)
24 V (NPN)
19 (D IN)
20 (COM D IN)
24 V (NPN)
27 (D IN/OUT)
24 V
0 V
24 V (NPN)
29
(D IN/OUT)
24 V
0 V
24 V (NPN)
32 (D IN)
0 V (PNP)
24 V (NPN)
33 (D IN)
*
37 (D IN)
®
Frequency Converters.
Danfoss A/S © Rev. 06/2014 All rights reserved.
24 V DC
200 mA
- + -
relay2
0 V (PNP)
(COM A OUT) 39
0 V (PNP)
(A OUT) 42
S801
0 V (PNP)
ON=Terminated
OFF=Open
5V
0 V (PNP)
S801
RS-485
(N RS-485) 69
Interface
(P RS-485) 68
(COM RS-485) 61
0 V (PNP)
(U) 96
(V) 97
(W) 98
(PE) 99
Motor
(R+) 82 Brake
resistor
(R-) 81
relay1
03
240 V AC, 2 A
02
01
06
240 V AC, 2 A
05
400 V AC, 2 A
04
Analog Output
0/4-20 mA
0 V
RS-485
: Chassis
: Ground
**
: PE
: Ground 1
: Ground 2
MG11BC02