EngA CenCon User Manual

CenCon
14
TERMINAL DESCRIPTION
Terminal
Type
Name
Description
Value
H N
Power Supply
24 Vac
GND
Ground
Connect to chassis.
LmA
B
Modbus
Internal
n
etwork
BmA,B
BACnet
BACnet
n
etwork
slave
(Future)
SmA,B
Modbus
Modbus
network slave (Future)
MCW
AO
Modulating cooling
Chilled water coil valve actuator. 0V=off.
0
-
10 Vdc
MEc
AO
Modulating economizer
Economizer / Mixbox actuator. 0V=closed.
0
-
10 Vdc
MHW
AO
Modulating heating
Hot water coil valve actuator.
0V=off.
0
-
10
Vdc
MSp
AO
VFD command speed
VFD control signal.
0
-
10 Vdc
RPM
AI
VFD feedback speed
Confirmation of VFD speed.
0
-
10 Vdc
DPr
AI
Supply duct pressure
Duct pressure sensor signal.
0
-
10 Vdc
IAQ
AI
Not used.
0
-
10 Vdc
HuO
AI
Outside humidity
Outside /
ambient air humidity sensor.
0
-
10 Vdc
CM
Relay common
Common power to output relays.
24 Vac
FbD
AI
Damper feedback
Damper actuator position feedback signal.
0
-
10 Vdc
OLF
DI
VFD fault
Motor overload or VFD fault input.
24 Vac
FbB
DI
Air proving switch
Supply blower air proving switch.
24 Vac
DES
DI
Damper end switch
Mechanical damper end switch.
24 Vac
AL
DO
Alarm
Alarm contact for annunciation.
24 Vac
SA
DO
Supply air
Blower enable contact.
24 Vac
DM
DO
Damper actuator enable
Two position
actuator control.
24 Vac
OCC
DI
Occupied / Unoccupied
Enable
occupied mode when powered.
24 Vac
TCB
DI
Time clock bypass
Momentary push button (future)
24 Vac
EnF
DI
Enable Fan
Occupied mode start
24 Vac
ALi
DI
Secondary Bacnet alarm
Spare al
arm input
for BACnet annunciation.
24 Vac
Y+- AI
Modulating cooling
thermostat
Independent cooling demand signal. 0-10 Vdc
MA1,2
AI
Mixed air temperature
10k Type 2 thermistor
Ohms (Ω)
DA1,2
AI
Discharge temperature
10k Type 2 thermistor
Ohms (Ω)
A
A1,2
AI
Ambient
air temperature
10k Type 2 thermistor
Ohms (Ω)
RA1,2 AI
Return / room
temperature
10k Type 2 thermistor Ohms (Ω)
W+- AI
Modulating heating
thermostat
Independent heating demand signal. 0-10 Vdc
ASP
AI
Remote VFD setpoint
VFD speed input demand
signal.
0
-
10 Vdc
H
r
+
-
AI
Modulating humidity
Independent humidity demand signal.
0
-
10 Vdc
DX1,2
AI
DX temperature
10k Type 2 thermistor
Ohms (Ω)
DhC
DI
Dehumidification.
Dehumidification call input.
24 Vac
Byp
DI
VFD Bypass
VFD bypass input.
24 Vac
RmA,B
Modbus Room
Modbus room thermostat (Future)

EngA CenCon Specifications

General

Brand	EngA
Model	CenCon
Category	Controller
Language	English