RKI Instruments M2/M2A AC-DC Power Supply User manual

RKI Instruments
Brand
RKI Instruments
Model
M2/M2A AC-DC Power Supply
Type
User manual

RKI Instruments M2/M2A AC-DC Power Supply is designed to convert 115 VAC to 24 VDC, allowing you to power your standalone M2/M2A from AC. It comes in either an aluminum or stainless steel junction box and is easy to mount and wire. The power supply is protected against abuse, including mechanical damage, alteration, rough handling, or repair procedures not in accordance with the operator's manual. With its one-year warranty and reliable performance, the RKI Instruments M2/M2A AC-DC Power Supply is an excellent choice for powering your M2/M2A gas monitor.

RKI Instruments M2/M2A AC-DC Power Supply is designed to convert 115 VAC to 24 VDC, allowing you to power your standalone M2/M2A from AC. It comes in either an aluminum or stainless steel junction box and is easy to mount and wire. The power supply is protected against abuse, including mechanical damage, alteration, rough handling, or repair procedures not in accordance with the operator's manual. With its one-year warranty and reliable performance, the RKI Instruments M2/M2A AC-DC Power Supply is an excellent choice for powering your M2/M2A gas monitor.

www.rkiinstruments.com
49-4000RK and 49-4000RK-SS
M2/M2A AC-DC Power Supply
Operator’s Manual
Part Number: 71-0247RK
Revision: B
Released: 8/13/20
2 • M2/M2A AC-DC Power Supply
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. This warranty does not apply to those items which by their nature are subject to deterioration
or consumption in normal service, and which must be cleaned, repaired, or replaced on a routine basis.
Examples of such items are:
Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair
procedures not in accordance with the operator’s manual. This warranty indicates the full extent of our
liability, and we are not responsible for removal or replacement costs, local repair costs, transportation
costs, or contingent expenses incurred without our prior approval.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER
WARRANTIES AND REPRESENTATIONS, EXPRESSED OR IMPLIED, AND
ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RKI
INSTRUMENTS, INC. INCLUDING BUT NOT LIMITED TO, THE WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL RKI INSTRUMENTS, INC. BE LIABLE FOR INDIRECT,
INCIDENTAL, OR CONSEQUENTIAL LOSS OR DAMAGE OF ANY KIND
CONNECTED WITH THE USE OF ITS PRODUCTS OR FAILURE OF ITS
PRODUCTS TO FUNCTION OR OPERATE PROPERLY.
This warranty covers instruments and parts sold to users by authorized distributors, dealers, and
representatives as appointed by RKI Instruments, Inc.
We do not assume indemnification for any accident or damage caused by the operation of this gas
monitor, and our warranty is limited to the replacement of parts or our complete goods.
a) Absorbent cartridges d) Batteries
b) Pump diaphragms and valves e) Filter elements
c) Fuses
M2/M2A AC-DC Power Supply • 3
Description
The M2/M2A 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/M2A to run from AC.
Figure 1: 49-4000RK Aluminum Junction Box Component Location
Figure 2: 49-4000RK-SS Stainless Steel Junction Box Component Location
3/4 NPT,
Female
Power Supply
3/4 NPT,
Female
AC In Terminal Strip
DC Out Terminal Strip
Ground Screw
Assembly Shown
without Lid
3/4 NPT,
Female
3/4 NPT,
Female
Assembly Shown
without Lid
Power Supply
DC Out Terminal Strip
Ground Screw
AC In Terminal Strip
4 • M2/M2A AC-DC Power Supply
Installation
This section describes procedures to mount the AC-DC power supply and wire it to the M2/M2A.
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/M2A.
Figure 3: 49-4000RK Aluminum Junction Box Outline and Mounting Dimensions
Figure 4: 49-4000RK-SS Stainless Steel Junction Box Outline and Mounting Dimensions
2.62
5.22
Ø3.61
3.34
5.05
2X .20 DIA x .45 SLOT
2.403.15
1.10
3.66
M2/M2A AC-DC Power Supply • 5
Wiring the AC-DC Power Supply to an M2/M2A
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. Guide a two conductor, shielded cable, or two wires in conduit through the unused conduit hub of
the power supply.
6. Connect the wires to the DC Out Terminal Strip.
7. Remove the junction box cover from the M2/M2A junction box and carefully pull the display off
of its standoffs.
8. Guide the two conductor, shielded cable, or two wires in conduit from the power supply junction
box through the unused conduit hub of the M2/M2A.
9. Connect the wires to the power terminal strip as shown in Figure 5 and Figure 6 below.
10. Secure the power supply junction box cover to the junction box.
11. Push the M2/M2A display back onto the jacks and secure the M2/M2A junction box cover to the
junction box.
6 • M2/M2A AC-DC Power Supply
Figure 5: Wiring to an M2
M2
AC Power
115 / 220 VAC
50/60 HZ
DC Out
Terminal Strip
AC In Terminal Strip
Power Supply
GROUND
LINE (HOT)
NEUTRAL
M2/M2A AC-DC Power Supply • 7
Figure 6: Wiring to an M2A
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/M2A is receiving power. See the M2 Operator’s Manual or
the M2A Operator’s Manual for M2 or M2A operation, respectively.
M2A
NEUTRAL
LINE (HOT)
GROUND
DC Out
Terminal Strip
C NC NO
ALARM 1
C NC NO
ALARM 2
C NC NO
FAIL
Power Supply
AC In Terminal Strip
A B C
RS 485
AC Power
115 / 220 VAC
50/60 HZ
- S +
PWR/SIG
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RKI Instruments M2/M2A AC-DC Power Supply User manual

RKI Instruments
Brand
RKI Instruments
Model
M2/M2A AC-DC Power Supply
Type
User manual

RKI Instruments M2/M2A AC-DC Power Supply is designed to convert 115 VAC to 24 VDC, allowing you to power your standalone M2/M2A from AC. It comes in either an aluminum or stainless steel junction box and is easy to mount and wire. The power supply is protected against abuse, including mechanical damage, alteration, rough handling, or repair procedures not in accordance with the operator's manual. With its one-year warranty and reliable performance, the RKI Instruments M2/M2A AC-DC Power Supply is an excellent choice for powering your M2/M2A gas monitor.

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