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Startup Guide -
May 2000
B-63003EN-2/01
1
Connecting the main power control signal
Main power to the servo drives is controlled by an external magnetic contactor (MCC) which
turns on to allow the motors to be driven. This connection enables this control signal.
1. Locate the 3-pin connector identified by FANUC part #
A06B-6089-K201
.
2. You must supply the cable for this connection. Connect the magnetic contactor coil
across pins 1 and 3 according to the Figure 1-14 below. You need to use a 16 gauge
(1.25 mm
2
) wire.
3. You will need a spark killer (voltage suppresser device) consisting of a resistor and
capacitor in series to protect the internal contacts in the power supply module. Table
1-4 below lists the recommended values for the spark killer.
Figure 1 - 14. Connecting the main power control signal
Table 1 - 4. Recommended coil voltage, capacitance, and resistance for spark killer
Coil Voltage Capacitance Resistance
24V DC 0.22µF22Ω
100V AC to 240V AC 0.1µF 220Ω
MCC
MCCOFF4
MCCOFF3
Spark killerCoil
~
external power supply
(according to the coil voltage)
CX3 MCC
connector pin layout