ElmoMC SimplIQ Digital Servo Drives-Harmonica Installation Guide - Manual (Page 24)

Harmonica Installation Guide Installation
MAN-HARIG (Ver. 1.902)
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24
3.5.3. Special Note about Disconnecting Molex Connectors
The Auxiliary Power Cable (J4), the Feedback cables (J2 and J3) and the I/O cables (J5, J6 and J7)
all use 2 mm pitch Molex connectors. These connectors snap together quite easily, but require
a small standard screwdriver for disassembly.
To disassemble the Molex connector:
1. Slip the screwdriver into the lock: The lock disengages.
2. Twist the screwdriver downward with light pressure on the handle (see the figure below).
Figure 9: Disconnecting Molex Connectors
3.5.4. Connecting the Auxiliary Power Cable (J4)
Connect the auxiliary power supply to the J4 port on the front of the Harmonica, using a
2-pin Molex plug. Remember, you are working with DC power; be sure to exercise caution. The
required voltage is 24 VDC.
Notes for 24 VDC auxiliary power supply connections:
• Use a 24, 26 or 28 AWG twisted pair shielded cable. The shield should have copper braid.
• The source of the 24 VDC must be isolated.
• For safety reasons, connect the return (common) of the 24 VDC source to the closest
ground.
• Connect the cable shield to the closest ground near the 24 VDC source.
• Before applying power, first verify the polarity of the connection.