Johnson Controls M300MJ-4-20 - User Manual

M300MJ-4-20
4-20mA Analog Input Module
BEFORE INSTALLING
This information is included as a quick reference installation guide. Refer to
the control panel installation manual for detailed system information. If the
modules will be installed in an existing operational system, inform the opera-
tor and local authority that the system will be temporarily out of service. Dis-
connect power to the control panel before installing the modules.
NOTICE: This manual should be left with the owner/user of this equipment.
GENERAL DESCRIPTION
The M300MJ-4-20 4-20mA Analog Input Module is intended for use in in-
telligent, two-wire systems, where the individual address of each module is
selected using the built-in rotary switches. This module allows intelligent pan-
els to interface and monitor two-wire or three-wire sensors, that produce a
4-20mA signal output. It transmits the status (normal, open, or alarm) of one
sensor back to the control panel. The M300MJ-4-20 has a panel controlled
LED indicator. Only one sensor can be connected to the M300MJ-4-20.
COMPATIBILITY REQUIREMENTS
To ensure proper operation, this module shall be connected to a compati-
ble Johnson Controls system control panel only (list available from Johnson
Controls). In addition, please refer to Johnson Controls Device Compatibility
document for the list of compatible devices.
FIGURE 1. CONTROLS AND INDICATORS:
C0218-05
SPECIFICATIONS
SLC
Normal Operating Voltage: 15 to 32 VDC
Maximum Current Draw: 9.3 mA (LED on)
Average Operating Current: 1 mA (LED flashing)
External Supply
Normal Operating Voltage: 24 VDC Nominal
Standby Current: 10 mA
Maximum Current: 510 mA
Initiating Device
Maximum Current: 500 mA
Temperature Range: –10°C to 60°C
Humidity: 10% to 95% Non-condensing
Dimensions: 4
1
/2˝ H × 4˝ W × 1
1
/4˝ D (Mounts to a 4˝ square by 2
1
/8˝ deep box.)
Accessories: SMB500 Electrical Box
JC-460-007 1 I56-3369-001
I56-3369-001
INSTALLATION AND MAINTENANCE INSTRUCTIONS
MOUNTING
The M300MJ-4-20 mounts directly to 4-inch square electrical boxes (see Fig-
ure 2). The box must have a minimum depth of 2
1
/8 inches. Surface mounted
electrical boxes (SMB500) are available from Johnson Controls.
FIGURE 2. MODULE MOUNTING:
C0449-01
WIRING
NOTE: All wiring must conform to applicable local codes, ordinances, and
regulations. This module is intended for powerlimited wiring only.
1. Install module wiring in accordance with the job drawings and appropri-
ate wiring diagrams.
2. Set the address on the module per job drawings.
3. Secure module to electrical box (supplied by installer), Figure 2.
507 E. Michigan Street
Milwaukee, WI 53201
Phone: 414.524.4000

Johnson Controls M300MJ-4-20 Specifications

General

Brand	Johnson Controls
Model	M300MJ-4-20
Category	I/O Systems
Language	English

Summary

Specifications of the M300 MJ-4-20 Module

SLC Specifications

Details on the SLC (System) normal operating voltage, maximum current draw, and average operating current.

External Supply Specifications

Details on the external supply's normal operating voltage, standby current, and maximum current.

Initiating Device Specifications

Details on the maximum current for the initiating device.

Environmental and Physical Specifications

Covers temperature range, humidity, dimensions, and available accessories for the module.

Installation Preparation and General Information

Before Installing

Provides preparatory steps, including referencing the control panel manual and ensuring power is disconnected before installation.

General Description

Explains the M300MJ-4-20 module's function in intelligent two-wire systems for monitoring 4-20mA sensors.

Compatibility Requirements

Outlines the need for connection to compatible Johnson Controls system control panels.

Module Mounting and Wiring

Module Mounting

Instructions for mounting the M300MJ-4-20 directly to 4-inch square electrical boxes.

Wiring Instructions

Guidance on wiring, emphasizing compliance with codes and job drawings for power-limited wiring.