Installation 2-5
MN1269
Power Wiring Continued
1.
Connect the negative lead (black wire) from the first servomotor to terminal 1 on
the 12 position terminal block (see Figure 2-2).
2.
Connect the positive lead (red wire) from the first servomotor to terminal 2 on
the 12 position terminal block (see Figure 2-2).
3.
For the second axis servomotor, connect the negative lead (black wire) to
terminal 3; and the positive lead (red wire) to terminal 4. Repeat this procedure
for any other axes (Refer to drawing in Appendix A).
4.
Do not at this time connect any AC power to the chassis.
5.
Wire the AC power input to the screw–type terminals on the rear of the chassis
as shown in Figure 2-2. Do not connect any AC power at this time. Phasing is
not critical on the bus power input. For LD-2 units, use the two terminals
marked L1 and L2 and connect 115VAC 1 phase power. For LD-4 units, use
the three terminals L1, L2, and L3 and connect 3 phase power.
Signal Wiring
1.
Connect the positive (+) side tachometer lead wire (of the first servomotor) to
the Tach input (pin 5) on the 18 position Phoenix style input signal connector
(see Figure 2-3).
2.
Connect the negative (–) side tachometer lead wire (of the first servomotor) to
the Tach input (pin 6) on the 18 position Phoenix style input signal connector
(see Figure 2-3). Tie the tachometer cable shield to pin (11) common.
3.
Continue connecting remaining tachometer lead wires for other axes (Refer to
drawing in Appendix A).
Figure 2-3 Input Signal Wiring
4.
Differential Command input
The “LD” Series Servo Control is configured to operate using a differential
command input signal. To utilize differential input, jumper P2 (see Figure 2-3)
must be in its right position (pins 1 to 2). This is the normal position as shipped.
The Servo Control Signal pot (S) will be used to scale the differential voltage
input.
5.
Connect the input velocity command signal to pin 1 and its return to pin 4.
Note: Do not apply voltage at this time.
6.
Verify the first axis tachometer signal by rotating the first axis motor shaft by
hand while monitoring the tach test points with a VOM. Connect the black lead
of the VOM to test point TP1 and the red to TP6. When rotating the motor shaft
in a clockwise direction (facing the shaft), the VOM should read positive.
Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ, 07045-0097
(973) 335-1007 • Toll Free: (800) 922-1103 • Fax: (973) 335-1661
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