
3
• The 4-20mA EMS Interface can provide the DC
current for the 4-20mA input signal. If using the
4-20mA 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 Figure 2.
4-20mA INPUT
+Signal GND
123
RS485
EXTENSION
CONNECTORS
(-)
EMS/BMS Input
Figure 2. TempTracker Provides Current for 4-20 mA
Signal
Connect the TempTracker Mod+, 4-20mA EMS interface
and up to two Extension Panels in the order shown in
Figure 3 for proper operation using the 6-wire phone
cables provided.
EMS 4-20mA input scale is shown in Figure 4.
1. INTRODUCTION
The 4-20mA EMS Interface (sales order option B-39,
kit 012019) 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.
2. 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 Figure 1.
4-20mA INPUT
+Signal GND
123
RS485
EXTENSION
CONNECTORS
(-)
EMS/BMS Input
Figure 1. External Device (e.g. BMS) Provides Current for
4-20 mA Signal
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