2. Digital Monitoring Products
  3. 502

Digital Monitoring Products 502 User guide

  • Hello, I have reviewed the Installation Sheet for the DMP 502-12 Power Supply. This document provides detailed instructions for installing and connecting the power supply, including the primary and secondary power sources, as well as compatible components. I'm ready to answer your questions about the specifications and installation process, or any other topic related to this device.
  • What is the primary power supply voltage?
    What is the maximum charge current for the secondary power supply?
    What is the recommended battery model?
    How often should the batteries be replaced?
InstallatIon sheet
LT-0451 (9/13) © 2013 Digital Monitoring Products, Inc.
502-12 Power Supply
Installation
1. Mount the Model 502-12 in desired location.
2. Connect transformer to terminals marked “AC Input” (J2).
3. Connect batteries to terminals marked “ + Bat - Input” (J3).
(Battery leads included) OBSERVE POLARITY
4. Connect devices to terminals marked “ + DC - Output” (J5).
Note: Measure and verify output voltage and current to ensure
proper operation of connected equipment.
502-12 Power Supply
J2 J3 J5
AC + BAT –+ DC –
Green
LED
AC
Red
LED
DC
Battery wires included
RedBlack
16 to 18 AWG wire
Plug 40 VA
transformer
into 120 VAC
60 Hz outlet
not controlled
by a switch.
Specications
12 VDC power supply
13.8 to 10.2 voltage range
2 Amp continuous supply current
Short circuit protection
75mA internal current draw
Primary Power Supply
120 VAC 60 Hz, 1.5 Amps unswitched
DMP Model 321 16.5 VAC 40 VA plug-in transformer
Secondary Power Supply
1.0 Amps maximum charge current
Use DMP Model 367, 12 VDC battery
Maximum 15.4 Amp hours
Use DMP Model 318 Dual Battery Harness
Replace batteries every 3 to 5 years
Low battery cutoff at 10.2 VDC
Includes battery leads
LED Operation
Green ON = AC good
Green OFF = AC fail
Red ON = DC good
Red OFF = DC fail
/