Motor Connection; Connection Via Terminal Box - Lenze MCA Series Mounting And Switch-On Instructions

Electrical installation

Motor connection

Connection via terminal box

Motor connection
Connection via terminal box
Observe the notes on wiring, data on the nameplate, and the connection diagram in the
terminal box.
The connection must ensure a continuous and safe electrical supply:
No protruding wire ends
•
Use assigned cable end fittings
•
Ensure good electrical conductivity of the contact (remove paint residues) if an additional
•
PE connection is used
Establish a safe protective earth connection
•
After the connection is completed, make sure that all connections on the terminal board
•
are firmly tightened
The terminal box has to be free of foreign bodies, dirt, and humidity
•
All unused cable entries and the terminal box itself must be sealed so that they are dust-
•
tight and waterproof
The smallest air gaps between uncoated, live parts and against earth must not fall below the
following values:
Minimum requirements for basic insulation
according to IEC/EN 60664-1 (CE)
3.87 mm
Position of the connections
MCA10 ... 19/21
1
Position Meaning
1 Power connection
Brake connection
PE connection
2 Feedback connection
Connection of temperature monitoring
Blower connection
58
Higher requirements for UL design
6.4 mm
9.5 mm
MCA20/22/26
2
Position
Motor diameter
<178 mm
> 178 mm
Meaning
1 Power connection
Brake connection
PE connection
2 Feedback connection
Connection of temperature monitoring
3 Blower connection
1
2
3