Maple Systems HMC7000 Series - Manual (Page 15)

HMC7000 Series Installation Guide
Maple Systems Inc., 808 134th Street SW, Suite 120, Everett, WA 98204-7333 • www.maplesystems.com .
1010-1042 Page 13 of 22 Rev. 02, 09/25/2013
Connect the HMC to Power
Use the separate 3-position terminal block supplied to provide power to the HMC.
The power cable for the HMC should be 18AWG, 2-conductor wire with a shield drain wire and protective shield
(foil/braid). You may buy cable P/N 6030-0009 by the foot from Maple Systems to make your own power cable.
Always run the DC ground wire directly back to the signal return of the power supply. Do not use the chassis ground wire
as your signal return.
Caution: To prevent possible damage to the HMC, we recommend waiting ten seconds after removing power to the HMC
before applying power again.
Figure 4: HMC Power Wiring
To connect the HMC to power:
1. Connect the power cable to the HMC.
a. Strip cable shield to expose 2” of the black/red wires.
b. Strip ¼” of insulation from the black/red wires.
c. Connect red wire to the 24V DC positive (+) input.
d. Connect black wire to the 24V DC negative (–) input.
e. Connect power shield wire to chassis ground input.
2. Route the power cable to the HMC power supply. The power cable should not be any longer than necessary.
3. Install the power supply wires as follows (with colors shown for Maple Systems cable P/N 6030-0009):
Color Power Supply HMC
Red +Output/+24VDC +24V
Black -Output/+24VDC return GND
Shield Case ground FG or Earth
NOTE: The power connector on the HMC7000 Series uses a 3-position terminal block with screw-down clamps. Lugs are not
required