United Technologies Carrier WeatherMaker 50TC A08 Series, Руководство по установке, Страница: 73 / 80

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Fig. 120 — PC Running Field Assistant
Table 26 — LEDs
Outdoor Air Enthalpy Control (P/N
33CSENTHSW) —
The enthalpy control
(33CSENTHSW) is available as a field-installed accessory to
be used with the EconoMi$er2 damper system. The outdoor air
enthalpy sensor is part of the enthalpy control. (The separate
field-installed accessory return air enthalpy sensor (33CSENT-
SEN) is required for differential enthalpy control. See
Fig. 121.)
Locate the enthalpy control in the economizer next to the
Actuator Motor. Locate two GRA leads in the factory harness
and connect the gray lead labeled “ESL” to the terminal labeled
“LOW.” See Fig. 121. Connect the enthalpy control power in-
put terminals to economizer actuator power leads RED (con-
nect to 24V) and BLK (connect to GND).
The outdoor enthalpy changeover setpoint is set at the en-
thalpy controller.
Fig. 121 — Enthalpy Switch (33CSENTHSW)
Connections
The LEDs on the RTU Open Controller show the status of certain functions
If this LED is on... Status is...
Power
The RTU Open controller has power
Rx
The RTU Open controller is receiving data from the network segment
Tx
The RTU Open controller is transmitting data over the network segment
BO#
The binary output is active
The Run and Error LEDs indicate control module and network status
If Run LED shows...
And Error LED shows... Status is...
2 flashes per second
Off Normal
2 flashes per second
2 flashes, alternating with Run LED Five minute auto-restart delay after system error
2 flashes per second
3 flashes, then off Control module has just been formatted
2 flashes per second
4 flashes, then pause
Two or more devices on this network have the same
MSTP network address
2 flashes per second
On
Exec halted after frequent system errors or control pro-
grams halted
5 flashes per second
On Exec start-up aborted, Boot is running
5 flashes per second
Off Firmware transfer in progress, Boot is running
7 flashes per second
7 flashes per second, alternating with Run LED Ten second recovery period after brownout
14 flashes per second
14 flashes per second, alternating with Run
LED
Brownout
On
On
Failure. Try the following solutions:
· Turn the RTU Open controller off, then on.
· Format the RTU Open controller.
· Download memory to the RTU Open controller.
· Replace the RTU Open controller.
Connect to
computer’s
USB port
Connect to
the Local
Access port
USB Link Kit
RTU Open Controller
Access
Port
J12
P1 P1
P5 P5
LOCAL
ACCESS
PORT
GND GND
*Therm
mA
*Therm
mA
UI-10
UI-11
SW3
on
COMM
OPTION
CR2032
+
-
SW1 SW2
MSB LSB
TX RX
+12 DVC
Rnet-
Rnet+
GND
RNET
J12
J13
J15
J20
7 CTB ECON
(P
’ LINK: to J4-2) or
(RTU Open: to J2-6)
LOW
GND
24V
Enth a lpy
S witch
GRA
BLK
RED
FACTORY WIRING HARNE SS
PL6-1 (24-V)
PL6-4 (COM)
48TC