Electrical Installation
NOTICE!
POTENTIAL EQUALIZATION!
Electrical interference risks disturbing the entire installation, when the ground potential between the adjustable
frequency drive and the system is different. To avoid electrical interference, install equalizing cables between the
system components. Recommended cable cross-section: 16 mm
4
4
4.4 Wiring Schematic
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
0/4-20 mA
Figure 4.1 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
Instruction Manual for Danfoss VLT
**Do not connect cable shield.
14
®
VLT
HVAC Drive Instruction Manual
91 (L1)
92 (L2)
93 (L3)
95
PE
Switch Mode
88 (-)
Power Supply
89 (+)
10 V DC
15 mA 130/200 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)
0 V (PNP)
24 V (NPN)
19 (D IN)
0 V (PNP)
20 (COM D IN)
24 V (NPN)
27
(D IN/OUT)
0 V (PNP)
24 V
0 V
24 V (NPN)
29
(D IN/OUT)
0 V (PNP)
24 V
0 V
24 V (NPN)
32 (D IN)
0 V (PNP)
24 V (NPN)
33 (D IN)
0 V (PNP)
*
37 (D IN)
®
Adjustable Frequency Drives.
MG11AJ22 - Rev. 2013-09-13
2
.
(U) 96
(V) 97
(W) 98
(PE) 99
24 V DC
(R+) 82
-
(R-) 81
relay1
03
02
01
relay2
06
05
04
(COM A OUT) 39
(A OUT) 42
S801
ON=Terminated
OFF=Open
5V
S801
0 V
RS-485
(N RS-485) 69
Interface
(P RS-485) 68
**
(COM RS-485) 61
Motor
Brake
resistor
240 V AC, 2 A
240 V AC, 2 A
400 V AC, 2 A
Analog Output
0/4-20 mA
RS-485
: Chassis
: Ground
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