Operations & Maintenance Manual
January 2002
Doc: TC02 O&M
Page 7 of 20
Status:
Final
issue: 11
©TB Controls 2011
3.1.
TC02 Connections
Connecting the field devices
Caution
There is no protection against accidental connection of 230 VAC to 24 VAC and data
connections.
Care must be taken to ensure connections for 230 VAC are made correctly and in
accordance with local regulations
Water control
option DIP switch
4 = ON
24VAC power
230VAC fan
control
LON data loop for
LCDs and slave TC02s
27
26
25
24
23
22
21
20
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
33
32
31
45
44
43
42
41
MODBUS RS485 network
RS485 red wire (A)
RS485 black wire (B)
RS485 shield in
RS485 shield out
RS485 jumper on shield out
24VAC feed
Actuator drive open
24VAC feed
24VAC common (0v)
Earth
Actuator drive closed
Fan speed common output
Fan speed 4 tap
Fan speed 3 tap
Fan speed 2 tap
Fan speed 1 tap
BMS / Time switch input
ground ref.
Return air sensor (data)
Sensor ground ref.
Overheat fault input
ground ref.
Occupancy PIR sensor or
BMS summer/winter input
ground ref.
BMS 0-10v ground ref.
BMS 0-10v fan speed input
LON +12v output (red wire)
LON L1 data (white wire)
LON L2 data (green wire)
LON 0v ground (black wire)
LON earth (shield)
Occupancy PIR +12v feed
Outside air sensor (data)
ground ref.
Heating SSR +ve
Heating SSR output -ve
Fault output ground ref.
Fault output (switch to gnd)
Off coil sensor (data)
Sensor ground ref.
40
39
38
37
36
35
34
