4 (4)
0FL-3924-001, 1998-09-18
English
Mounting
Mount the controller directly onto a wall or install it on a standard
70 mm diameter electrical box.
1. Undo the locking screw and remove the cover.
2. Undo the circuit board fixing screw and lift the board away
from the bottom section.
3. Mount the bottom section directly onto the wall or onto an
electrical box.
When mounting directly onto a wall follow the instructions in the
upper section of the cover. Drill Ø 8 mm or Ø 11 mm holes for
the cable.
When installing the controller on an electrical box, run the cables
through the hole in the bottom section.
Figure 6
83
(
)
32
36
Ø
60
Fixing
screw
Measurements in mm
Locking
screw
Electrical installation
Install the circuit board and connect it in accordance with the
wiring diagrams.
Length of cables
Max. 200 m, area 0,5 mm
2
to all connections.
Fuses
The controller has two fuses. One of them protects against
errors on the circuit board and the other against overload of
the output relays. Be careful when connecting the load. You
cannot change the fuses on site.
Terminal board connections
B
Temperature sensor
M
Measurement zero
Z1
SPC-input
MZ
Measurement zero, SPC
D5
Output cooling, normally closed NC
G0
24 V AC, neutral
G
24 V AC, line
G0
24 V AC, neutral
D3
Output heating, normally open NO
D2
Output heating, normally closed NC
Technical data
Part number:
TAC 268TX .................................................... 268-1061-000
Supply voltage ...................................... 24 V AC +20% –10%
Control range ..................................................... +10 – +30 °C
Power consumption ...................................................... 0,5 VA
Ambient temperature:
Operating ........................................................... 0 – +50 °C
Storage ........................................................... –40 – +85 °C
Ambient humidity .............................................. max. 90% RH
Casing material ..................................................... ABS-plastic
Colour ............................................................................. white
Enclosure rating .............................................................. IP 31
Temperature sensor ............... thermistor, 50 kohm at +25 °C
SPC-function ........................................ can be set from 0 to 8
Control function ........................................................... On / Off
Hysteresis .................................................................. ± 0,1 °C
Relay outputs:
Number ...................................... 2 for heating, 1 for cooling
On/off output signal .............................. 24 V AC, max 0.8 A
Number of actuators/output .................................. 3 parallel
Neutral zone .............................................................. 0 – +4 K
Size ................................................................ 120×80×28 mm
Figure 5
B
M Z1 MZ
D5 G0 G G0 D3 D2
24V AC
Actuator
heating NO
Actuator
heating NC
External
sensor
Master
out
SPC
in
Actuator
cooling NC
TAC AB, Jägershillgatan 18, SE-213 75 MALMÖ, SWEDEN, +46 40 38 68 50 (switchboard)
