Wiring; Mfa 4P Wiring For Automatic Start Delay - Siemens milltronics MFA 4P Instruction Manual

Wiring

MFA 4p Wiring for Automatic Start Delay

L
STOP
SEE NOTE 3
STOP
SEE NOTE 3
Notes:
1. Interlocks and Safety Pull Switches are not shown.
2. If START is initiated by programmable logic controller, closure time may be too
brief to allow MFA 4p contact to latch. In this case, program a timer contact
into the circuit.
3. CSA requires an 8A or less fuse to protect contacts. For 240 V AC, protect the
contacts with a 1500 VA transformer as well.
Should the Time Delay feature on start-up not be required, power should be applied
continuously from a separate source and the potentiometer turned to zero. This is usually
necessary for automatic up-stream start up of conveying devices after the down-stream
drive has reached its operation speed.
7ML19985FM01
115/230V AC 50/60 HZ
START
TB-1
1/4 2/5
M
MFA 4p
1
SEE NOTE 2
OR
START
HOLD UNTIL UP TO SPEED
TB-1
1/4 2/5
MFA 4p M
1
MFA 4p - INSTRUCTION MANUAL
M
CONTACTOR
TB-1
12 11
L N
MFA 4p
10
G
M
CONTACTOR
TB-1
12 11
L N
MFA 4p
10
G
L/N
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