Home > Schneider Electric > Schneider Electric TC900 Series Space Logic Thermostat Instruction Manual
Schneider Electric TC900 Series Space Logic Thermostat Instruction Manual
SpaceLogic Thermostat TC900 Series Installation Instructions
SpaceLogic Thermostat TC900 Series Installation Instructions
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Parameter Settings
Energy Saving Functions (cont.)
Parameter Settings Table (cont.)
place the device in an inoperative state and display
the
Number
26
Parameter
Default
00
Description
the mode button or Fan button to move forward
or backward between the parameters shown in the
switch selection
Backlight standby brightness
01: Key card switch
00 = 0% brightness to 05 = 5% brightness
E1: Sensor short-circuit alert
E2: Sensor open-circuit alert
27
05
table below. Press the up
to adjust these parameters.
and down
buttons
* For 2-pipe system with 3-wire motorized valve, the thermostat supports either Heating Mode or Cooling Mode, but not
both Heating mode and Cooling mode simultaneously.
is lower than 0 °C.
Parameters 01 to 11 apply to all models.
Parameter Settings Table
Number
Parameter
Default
Description
01
Low temperature protection
On
OF: Disabled, On: Enabled
Parameter 27 only applies to TC907 models.
Fan operation status after
temperature setting is reached
02
03
DA
00
This parameter table must be set by specialized installation personnel authorized by Schneider Electric. Any inconvenience
or damage caused by unauthorized operation will not be covered by warranty.
00: Power-down memory, 01: power-down do not remember,
02: power-up power-on
Power-on state
04
05
06
07
08
1°C
2°C
1~3°C
1~5°C
Wiring
Provide an approved disconnecting means and
overcurrent protection to supply conductors. The
disconnecting device(s) shall meet the relevant
Standalone
requirements of IEC 60947-1 and IEC 60947-3 and
shall be suitable for the application. Locate and
mark per local requirements.
Heating set-point upper limit
Cooling set-point lower limit
Auto deadband
35°C 5 to 35°C
5°C
1°C
5 to 35°C
1 to 3°C (only for 4-pipe Auto mode)
90 to 240Vac
00: Heating only (heating, ventilation), 01: Cooling only (cooling,
ventilation), 02: Heating and cooling (heating, cooling, ventilation)
AC24V
TC903(7)-3A4DPSA(B)
TC903(7)-3A2P-24(B)
N
L
Mode button selection (2-pipe)
Mode button selection (4-pipe)
02
02
R
C
Remote Sensor
Input
S1
S2
GND
L
09
Cooling Valve
Heating Valve
AO1
AO2
00: Heating only (heating, ventilation), 01: Cooling only (cooling,
ventilation), 02: Heating and cooling (heating, cooling, ventilation),
03: Auto, 04: 2-pipe mode*
C1
C2
AO1
Energy
Saving Input
Thermostat
Thermostat
N
OF: Fan Auto disabled - Fan mode setting can be High, Medium or
Low, On: Fan Auto enabled - Fan mode setting can be High, Medi-
10
Auto fan setting
On
N
L
R
C
11
12
13
14
15
16
17
18
Show temperature selection
Modbus connection
Modbus address setting
Modbus baud rate
00
On
01
01
00
On
24
On
00: Room temperature, 01: Set-point
OF: Disabled, On: Enabled
01 to 64
00: 4800 bps, 01: 9600 bps, 02: 19200 bps, 03: 38400 bps
Modbus parity check
Clock display
90 to 240Vac
AC24V
AC24V
TC903(7)-3A4DPMSA-24(B)
TC903(7)-3A4DPMSA-24(B)
OF: Disabled, On: Enabled
TC903(7)-3A4DPMSA(B)
S1
RS-485
Modbus
RS-485
Modbus
RS-485
Modbus
N
L
Energy
Saving
R
C
R
C
Remote Sensor
Input
Remote Sensor
S1
C1
C2
A
A
A
Input
S2
S2
12/24 hour clock
12: 12-hour clock, 24: 24-hour clock
OF: Disabled, On: Enabled
B
B
B
Cooling Valve
Heating Valve
AO1
AO2
Cooling
Valve
Cooling
Valve
C1
AO1
AO2
AO1
AO2
L
L
Sleep Energy Saving mode
Heating
Valve
Heating
Valve
C2
Energy
Saving Input
Cooling temperature, Unoccu-
pied Energy Saving mode
Thermostat
Thermostat
Thermostat
19
20
21
28°C 22 to 32°C
16°C 10 to 21°C
N
N
R
C
R
C
N
L
Heating temperature, Unoccu-
pied Energy Saving mode
Fan speed, Unoccupied
Energy Saving mode
02
00: High speed, 01: Medium speed, 02: Low speed
22
23
Temperature sensor selection
Low-speed fan output voltage
00
3.3V
Range: 0V to medium-speed setting
Medium-speed fan output
voltage
24
25
6.6V
10V
Range: Low-speed setting to high-speed setting
Range: Medium-speed setting to 10V
High-speed fan output voltage
© 2024 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.
Schneider Electric, 35 rue Joseph Monier, F - 92500 Rueil-Malmaison
© 2024 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.
Schneider Electric, 35 rue Joseph Monier, F - 92500 Rueil-Malmaison
SpaceLogic Thermostat TC900 Series Installation Instructions
SpaceLogic Thermostat TC900 Series Installation Instructions
schneider-electric.com | 7
schneider-electric.com | 8
Modbus Transport Protocols (cont.)
Mounting
Reg.
Description
12 = 12-hour clock
24 = 24-hour clock
TC903 Series
Function Code 03/06 (cont.)
30 12/24-hour clock
Reg.
Description
Set-point
00 = Occupied
when short-circuit,
unoccupied when
open-circuit
01 = Unoccupied
when short-circuit,
occupied when
open-circuit
4
5 to 35 °C
00 = High,
01 = Medium,
02 = Low, 03 = Auto
5
Fan mode
31
close/open
6
7
Heating set-point, upper limit 5 to 35°C
Cooling set-point, lower limit 5 to 35°C
0 = Disable
8
9
ECO mode
1 = Enable
TC907 Series
Unoccupied mode, cooling
setpoint
32
33
22 to 32°C
10 to 21°C
ECO mode, cooling set-point 22 to 32°C
Unoccupied mode, heating
setpoint
10 ECO mode, heating set-point 10 to 21°C
11 Temperature compensation -5 to 5°C
00 = High
01 = Medium
02 = Low
Unoccupied mode, fan
speed
12 Setpoint, upper limit
13 Setpoint, lower limit
2 to 49.5°C
0 to 47.5°C
34
0 = Disable
1 = Enable
00 = Local device
35 Temp. value from connection 01 = Modbus
connection
14 Sleep mode
2. Remove the display 3. Connect the wires
head screwdriver along from the base module. according to the appro- module onto the wall
4. Mount the base
5. Fit the display module
onto the base module.
Align upper hooks be-
tween the two modules.
Carefully replace the
wiring connection if it
has been removed.
0 = Disable
1 = Enable
15 Low temperature protection
36 Temp. input
the bevel into the slot. Carefully remove the
Pry upwards with appro- wire connections, if
priate force to release required.
the two hooks.
priate wiring diagram
Fan operation after setting
16
37 Heating mode KP
38 Cooling mode KP
39 PID sampling time
40 KI
1 to 99
1 to 99
1 to 99 s
0 to 99
1 to 99
shown above. Ensure screws supplied.
the polarity of the mains
supply is correct.
temperature is reached
1 = Fan on
00 = Power-down
memory
17 Power-on state
Click display module
onto base module using
the two lower hooks.
41 Span
memory
02 = Display on
when powered
Heating valve 2, output
voltage
42*
is displayed)
Modbus Transport Protocols
Code
Register Type
Data
Format
18
1 to 3°C
1 to 5°C
1 to 3°C
Read holding
registers
16-bit unsigned
integer
19
Cooling valve 1, output
voltage
The TC900 Series thermostats come with the
option of Modbus communication. The support of
Modbus communication allows simple integration
of the TC900 Series thermostats with a building
management system using standard Modbus serial
communication.
03
Word
43*
20 Auto deadband
is displayed)
Read input
registers
16-bit unsigned
integer
0 = Heat only (heat
& vent)
1 = Cool only (cool
& vent)
2 = Heat and cool
(heat, cool & vent)
3 = Auto
04
06
Word
Word
Range: 0V to
medium-speed
setting
Low-speed fan output
voltage
44
Write single
register
16-bit unsigned
integer
Operation mode
21
Range: Low-speed
setting to high-speed
setting
Medium-speed fan output
voltage
Function Code 01
45
The TC900 Series thermostats communicate as
a Modbus RTU secondary device over a serial
RS-485 connection, allowing for the transfer of
real-time data. The RS-485 communication para-
meters, such as baud rate, parity check and Mod-
bus address, can be adjusted.
Reg.
Description
Cooling valve (4-pipe)
High-speed fan output
voltage
Range: Medium-
speed setting to 10V
4 = 2-pipe mode
46
0
4
5
6
7
0 = Disable
1 = Enable
22 Auto fan
Fan speed status high
Fan speed status medium
Fan speed status low
Heating valve (4-pipe)
0 = Unlocked
1 = Locked
47 Keypad status
00 = Room temp.
01 = Set-point
23 Display temperature
24 Temperature sensor
0 = Unoccupied
1 = Occupied
48* Occupancy status
00 = Built-in sensor
1 = Occupied
2 = Unoccupied
in the Parameter Settings Table. If required, adjust
the settings to disable the Modbus connection. All
of these settings can be completed under menu
items 12 to 15. Connection to the RS-485 network
is made via dedicated terminals on the back of
the thermostat and marked A (+) and B (-). The
following Modbus register types and formats are
supported:
Function Code 02
49 Occupancy override
50* Keycard status
0 - Disable
1 - Enable
1 to 64
25 Modbus connection
Reg.
Description
26 Modbus address setting
2
3
Temp sensor, short circuit
Temp sensor, open circuit
0 = OK, 1 = Fault
0 = OK, 1 = Fault
1 = Present
00 = 4800 bps
01 = 9600 bps
02 = 19200 bps
03 = 38400 bps
Brightness values
0 to 5% in 1%
increments.
Backlight brightness
(TC907 only)
51
27 Modbus baud rate
Function Code 03/06
Reg.
Description
*Read only.
00 = Odd check
01 = Even check
28 Modbus parity check
29 RTC clock display
2
Thermostat mode
Function Code 04
02=Frost protection*
Code
Register Type
Data
Format
1 = Cool, 2 = Heat,
3 = Ventilation,
4 = Auto
01 Read coils
Boolean Binary/digital
0 = Disable
1 = Enable
Register
Description
3
Operation mode
Read discrete
inputs
0
Actual room temperature
0 to 50°C
02
Boolean Binary/digital
© 2024 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.
Schneider Electric, 35 rue Joseph Monier, F - 92500 Rueil-Malmaison
© 2024 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.
Schneider Electric, 35 rue Joseph Monier, F - 92500 Rueil-Malmaison
| General | Details |
|---|---|
| Name | Schneider Electric TC900 Series Space Logic Thermostat Instruction Manual |
| Make | Schneider Electric |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.38 MB |
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