LAARS XSIG - Install and Operating Manual - Manual

INSTALLATION AND OPERATION INSTRUCTIONS
XSIG
Adds 4-20mA Set point capability to M4 and S8 Controls
The XSIG Interface provides the M4 and S8 series
controls with the capability of receiving an external
Set Point as a 4-20mA signal through an Energy
Management or Building Management Systems (EMS/
BMS). In addition, the M4 and the S8 controls can be
shutdown by the EMS/BMS system.
WIRING
Wiring the EMS Signal
• The signal must be a two-wire 4-20mA.
• A system sensor must be installed to the M4 or S8 control.
• The External Set Point must be set up correctly (See M4 and S8
documentation). These settings will allow the M4 and S8 to read
and monitor the system temperature and also monitor the 4-20mA
input to remotely adjust the set point to the desired value.
• The XSIG Interface can source the current for the 4-20mA input
signal. It provides an excitation DC current. If using the XSIG
Interface to source the power, attach the (+) side of the EMS/BMS
signal to the XSIG Interface terminal marked +. Attach the (-) side
of the EMS/BMS signal to the XSIG Interface terminal marked
SIGNAL.
• If the EMS/BMS or other equipment signal sources the current
(provides the excitation voltage), attach the (+) side of the 4-20mA
input to the XSIG Interface terminal marked SIGNAL. Attach
the (-) side of the 4-20mA input to the XSIG Interface terminal
marked GND.
4-20 mA EMS
4-20mA INPUT
+ Signal GND
1 2 3
RS485
EXTENSION
CONNECTORS
XSIG
4-20 mA EMS
4-20mA INPUT
+ Signal GND
1 2 3
RS485
EXTENSION
CONNECTORS
(-)
XSIG Interface Sources
DC Excitation Voltage
(+)
EMS/BMS Input
4-20 mA EMS
4-20mA INPUT
+ Signal GND
1 2 3
RS485
EXTENSION
CONNECTORS
(-)
EMS/BMS Sources
Excitation Voltage
(+)
EMS/BMS Input
XSIG
XSIG
4-20 mA EMS
4-20mA INPUT
+ Signal GND
1 2 3
RS485
EXTENSION
CONNECTORS
(-)
XSIG Interface Sources
DC Excitation Voltage
(+)
EMS/BMS Input
4-20 mA EMS
4-20mA INPUT
+ Signal GND
1 2 3
RS485
EXTENSION
CONNECTORS
(-)
EMS/BMS Sources
Excitation Voltage
(+)
EMS/BMS Input
XSIG
XSIG
Document 4214