Raypak 4-20mA Installation Manual

This manual should be maintained in legible condition and kept adjacent to the heater or in another safe place
for future reference.

Catalog No. 5000.68A Effective: 11-20-07 Replaces: 06-06-07 P/N 241323 Rev. 2

INSTALLATION & OPERATING

INSTRUCTIONS

Adds 4-20mA Setpoint capability to

TempTracker Mod+ Control System

4-20mA
EMS
Interface

4-20 mA EMS

4-20mA INPUT

Signal GND

+

2

1

3

RS485

EXTENSION

CONNECTORS

2

INTRODUCTION

The 4-20mA EMS Interface provides the TempTracker
Mod+ control with the capability of receiving an exter­nal Setpoint as a 4-20mA signal through Energy
Management or Building Management Systems
(EMS/BMS). The External Setpoint is a temperature
input and can also function as a Shutdown signal.

WIRING

Wiring the EMS Signal

• The signal must be a two-wire 4-20mA.

• A system sensor must be installed to the
TempTracker Mod+ control.

• The External Setpoint must be set up correctly
(See TempTracker Mod+ documentation). These
settings will allow the TempTracker Mod+ to read
and monitor the system temperature and also
monitor the 4-20mA input to remotely adjust the
setpoint to the desired value.

• If the EMS/BMS or other equipment signal pro­vides the DC current, attach the (+) side of the
EMS/BMS signal to the 4-20mA EMS Interface ter­minal marked SIGNAL. Attach the (-) side of the
EMS/BMS signal to the 4-20mA EMS Interface ter­minal marked GND as shown in Fig. 1.

• The 4-20mA EMS Interface can provide the DC
current for the 4-20mA input signal. If using the 4­20mA EMS Interface to provide the power, attach
the (+) side of the EMS/BMS signal to the 4-20mA
EMS Interface terminal marked +. Attach the (-)
side of the EMS/BMS signal to the 4-20mA EMS
Interface terminal marked SIGNAL as shown in
Fig. 2.

Fig. 2: TempTracker Provides Current for 4-20 mA

Signal

Fig. 1: External Device (e.g. BMS) Provides Current for

4-20 mA Signal

4-20mA INPUT

Signal

GND

+

2

1

3

RS485

EXTENSION

CONNECTORS

(-)

EMS/BMS Input

(+)

4-20mA INPUT

GND

Signal

+

2

1

3

(-)

EMS/BMS Input

RS485

EXTENSION

CONNECTORS

(+)