LPC-SVX01C-EN
55
Operation
general
information
Input and Outputs
This chapter provides information about
the function of inputs and outputs of the
Tracer AH540/541 controller. The Tracer
AH540 is configured at the factory per
unit configuration and order information.
The field-installed Tracer AH541 must be
configured using a Rover service tool
(refer to the
Rover Operation and
Programming guide, EMTX-SVX01E-EN,
for more information).
Binary outputs
The Tracer AH540/541 controller has six
binary outputs that are assigned to the
specific functions shown in Table O-GI-2.
The binary outputs are normally-open,
form A relays. The relays act as a switch
by either completing or breaking the
circuit between the load (the end device)
and the 24 Vac power. For example,
when binary input BO1 is energized, 24
Vac is supplied to terminal BO1, which in
turn energizes the supply fan start/stop
relay (see Figure O-GI-14).
Each binary output has a green status
LED on the Tracer AH540/541 controller
board. The LED is off when the relay
contacts are open. The LED is on when
the relay contacts are closed.
When the binary output relay is Off
(contact is open), a multimeter should
measure 0 Vac across the output termi-
nals. When the binary output relay is On
(contacts are closed), a multimeter should
measure 24 Vac across the output
terminals.
Analog outputs
The Tracer AH540/541 controller has five
analog outputs that are assigned to the
specific functions shown in Table O-GI-3
Table O-GI-2.
Binary outputs functions & locations
Tracer AH540
Tracer AH541
factory
field
maximum
output
terminal
terminal
terminal
power
output
label
label
label
label
function
function
rating
BO1
TB21/1 OUT
J21
BO1
supply fan start/stop
24 Vac
12 VA
TB21/2 GND
ground
BO2
TB22/1 OUT
J22
BO2
exhaust fan start/stop
24 Vac
12 VA
TB22/2 GND
ground
BO3
TB23/1 OUT
J23
BO3
DX stage 1 or electric stage 4
24 Vac
12 VA
TB23/2 GND
ground
BO4
TB24/1 OUT
J24
BO4
DX stage 2 or electric stage 3
24 Vac
12 VA
TB24/2 GND
ground
BO5
TB25/1 OUT
J25
BO5
DX stage 3 or electric stage 2
24 Vac
12 VA
TB25/2 GND
ground
BO6
TB26/1 OUT
J26
BO4
DX stage 4 or electric stage 1
24 Vac
12 VA
TB26/2 GND
ground
Figure O-GI-14. Tracer AH540 Termination Board Example
TB21-1
TB21-2
24VAC
GND
Supply Fan (Start/
BO
Table O-GI-3. Analog output functions & locations
Tracer AH540
Tracer AH541
factory
field
maximum
output
terminal
terminal
terminal
output range
output
label
label
label
label
function
default value
1
rating
AO1
TB11/1 OUT
J11
AO1
supply fan speed
0 to 10 Vdc
20 mA
TB11/2 GND
ground
AO2
TB12/1 OUT
J12
AO2
cool valve output or
2 to 10 Vdc
20 mA
TB12/2 GND
2-pipe changeover
ground
AO3
TB13/1 OUT
J13
AO3
heat output (water, steam,
2 to 10 Vdc
20 mA
TB13/2 GND
or electric heat sequencer)
ground
AO4
TB14/1 OUT
J14
AO4
face & bypass damper
2 to 10 Vdc
20 mA
TB14/2 GND
ground
AO5
TB15/1 OUT
J15
AO5
outdoor air damper
2 to 10 Vdc
20 mA
TB15/2 GND
ground
AO6
TB16/1
J16
AO4
not used
2 to 10 Vdc
20 mA
TB16/2
ground
1 Each analog output can be configured for 0–10 Vdc or 2–10 Vdc operation, and normally open or normally closed.
Содержание LPC
Страница 50: ...50 LPC SVX01C EN Operation general information Figure O GI 9 Tracer AH540 termination board ...
Страница 89: ...LPC SVX01C EN 89 Operation sequence of operation Table O SO 19 Comm LED yellow Table O SO 20 Required inputs ...
Страница 91: ...LPC SVX01C EN 91 Maintenance diagnostics Table M D 2 Tracer AH540 541 diagnostics ...
Страница 92: ...92 LPC SVX01C EN Maintenance diagnostics Table M D 2 continued Tracer AH540 541 diagnostics ...
Страница 94: ...94 LPC SVX01C EN Maintenance troubleshooting Table M T 2 Valves stay open ...
Страница 95: ...LPC SVX01C EN 95 Maintenance troubleshooting Table M T 3 Valves stay closed ...
Страница 96: ...96 LPC SVX01C EN Maintenance troubleshooting Table M T 4 Outdoor air damper stays open ...
Страница 97: ...LPC SVX01C EN 97 Maintenance troubleshooting Table M T 5 Outdoor air damper stays closed ...
Страница 98: ...98 LPC SVX01C EN Maintenance troubleshooting Table M T 6 DX cooling binary outputs do not energize ...
Страница 99: ...LPC SVX01C EN 99 Maintenance troubleshooting Table M T 7 Electric heat binary outputs do not energize ...
Страница 104: ...104 LPC SVX01C EN Maintenance appendix Figure M A 1 Flowchart EnteringWaterTemperature Sampling Function ...
Страница 107: ...LPC SVX01C EN 107 Maintenance appendix Table M A 6 Hard wired CO2 sensor values ...
Страница 109: ......