M2 AC-DC Power Supply Operator’s Manual Part Number: 71-0247RK Revision: 0 Released: 3/19/12 www.rkiinstruments.
Product Warranty RKI Instruments, Inc. warranties gas alarm equipment sold by us to be free from defects in materials, workmanship, and performance for a period of one year from date of shipment from RKI Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of charge.
Description The M2 AC-DC power supply is enclosed in either an aluminum junction box or a stainless steel junction box and converts 115 VAC to 24 VDC. This allows a standalone M2 to run from AC.
Installation This section describes procedures to mount the AC-DC power supply and wire it to the M2. Mounting the AC-DC Power Supply 1. Select an appropriate mounting site where the power supply is not likely to be bumped or disturbed. Make sure there is sufficient room to wire the power supply back to the M2. 2.62 5.22 Ø3.61 Figure 3: 49-4000RK Aluminum Junction Box Outline and Mounting Dimensions 2X .20 DIA x .45 SLOT 3.34 5.05 1.10 3.15 2.
Wiring the AC-DC Power Supply to an M2 WARNING: Always verify that the power to the controller is off before you make wiring connections. 1. Turn off all incoming power. 2. Remove the junction box cover from the power supply junction box. 3. Guide a three conductor, shielded cable, or three wires in conduit through one of the conduit hubs on the power supply. 4. Connect the wires to the AC In Terminal Strip. 5.
AC In Terminal Strip GROUND NEUTRAL LINE (HOT) Power Supply AC Power 115 / 220 VAC 50/60 HZ M2 DC Out Terminal Strip Figure 5: Wiring to an M2 Start Up/Operation Turn on the AC power. Once all wiring is complete and the AC power has been turned on, the AC-DC power supply is functioning and the M2 is receiving power. See the M2 Operator’s Manual for M2 operation.
