Operations & Maintenance Manual
January 2002
Doc: TC02 O&M
Page 4 of 20
Status:
Final
issue: 11
©TB Controls 2011
2.
TC02 controller
2.1.
Design
The TB Controls TC02 controller is designed to be a cost effective multi-purpose digital
control unit fulfilling the requirements for over-door curtain heaters and powerful fan coil
units such as the Ambassador. It will control both electric and water fed units (air and
water side types) or a combination of both.
The control system consists of a control board of 140 mm long by 70 mm wide by 35 mm
deep, mounted in the FCU and user display board of approximately 105 mm long by 60
mm wide. It is supplied on a standard 146 mm long by 81 mm wide electrical faceplate.
The user display board has an alphanumeric LCD display. It is connected to the controller
with a twin twisted pair cable.
2.2.
Features
The curtain heater controller unit has the following features…
Powered from 12-24 volts AC or DC.
Four fan speed settings with silent fan speed switching. Controlled by four
snubberless triacs with heat sinks for increased current handling.
Direct PID control of valve actuators for water fed systems.
PID control of electric heating elements, with an external solid-state relay.
Selectable off-coil setpoint from the values of up to 70
C.
Master/slave control of fan speeds achieved with twin twisted pair between
controllers.
High precision digital temperature sensors, no cable length restrictions and
calibration unnecessary.
ELV Stat input to reduce or turn off heating when room temperature setpoint
exceeded in curtain heater systems.
On/off input for time clock or BMS control.
BMS control of fan speeds.
On/off input for occupancy sensor control. Settable run on time, default 15
minutes.
Fault indication input for overheat trip display.
Fault indicator output for BMS or panel display.
Figure 1 - LCD
Figure 2- TC02 Controller
