Introduction
1
1
1.5 Electrical Wiring
3 Phase
power
input
DC bus
+10Vdc
0/-10Vdc -
+10Vdc
0/4-20 mA
0/-10Vdc -
+10Vdc
0/4-20 mA
Illustration 1.2 Basic Wiring Schematic Drawing
A=Analog, D=Digital
Terminal 37 is used for Safe Torque Off. For Safe Torque Off installation instructions, refer to the VLT
Safe Torque Off Operating Instructions.
* Terminal 37 is not included in FC 301 (except enclosure type A1). Relay 2 and terminal 29 have no function in FC 301.
** 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 50/60 Hz ground loops occur, consider breaking the shield or insert a 100 nF capacitor between shield and enclosure.
To avoid ground currents from both groups to affect other groups, connect the digital and analog inputs and outputs
separately to the common inputs (terminals 20, 55, and 39) of the frequency converter. For example, switching on the digital
input may disturb the analog input signal.
8
®
VLT
AutomationDrive FC 301/302
91 (L1)
92 (L2)
93 (L3)
95
PE
Switch Mode
88 (-)
Power Supply
89 (+)
10Vdc
15mA
50 (+10 V OUT)
+
-
S201
53 (A IN)
ON=0/4-20mA
S202
OFF=0/-10Vdc -
+10Vdc
54 (A IN)
55 (COM A IN)
12 (+24V OUT)
13 (+24V OUT)
P 5-00
24V (NPN)
18 (D IN)
0V (PNP)
24V (NPN)
19 (D IN)
0V (PNP)
20 (COM D IN)
24V (NPN)
27
(D IN/OUT)
0V (PNP)
24V
0V
*
24V (NPN)
29
(D IN/OUT)
0V (PNP)
24V
0V
24V (NPN)
32 (D IN)
0V (PNP)
24V (NPN)
33 (D IN)
0V (PNP)
*
37 (D IN)
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(U) 96
(V) 97
(W) 98
(PE) 99
24Vdc
(R+) 82
130/200mA
+
-
(R-) 81
relay1
* relay2
(COM A OUT) 39
(A OUT) 42
S801
ON=Terminated
OFF=Open
5V
S801
RS-485
(N RS-485) 69
Interface
(P RS-485) 68
(COM RS-485) 61
Motor
Brake
resistor
03
240Vac, 2A
02
01
06
240Vac, 2A
05
400Vac, 2A
04
Analog Output
0/4-20 mA
0V
RS-485
**
: Chassis
: Earth
®
Frequency Converters -
MG33ML02
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