Regin TTC25X Instructions page 2

TTC25X
95
195
TTC25X
25A 210-240/380-415V~
Made in Sweden
AB REGI N, Kållered
Po w er
L1 In
L2 In
L3 In
L3 Out
L2 Out
L1 Out
Signal
8 . N e u tr a l
9 . 0 - 1 0V D C in
IMPORTANT: Read these
instructions before installation
!
and wiring of the product.
8 9
L1 L2 L3 L3 L2 L1
Fig 1
8 9
0...10V DC in
0
Fig 2
Box 116 428 22 KÅLLERED SWEDEN
Tel +46 (0)31 720 02 00 Fax +46 (0)31 720 02 50
INSTRUCTIONS
Triac controller for proportional control
of electric heating
TTC25X is a proportional controller for electric heating with
automatic voltage adaption. TTC25X pulses the whole load On -
200
Off. The ratio between On-time and Off-time is varied 0 - 100% to
suit the prevailing heat demand. The current is always switched at
zero phase angle to prevent RFI.
TTC25X can control both symmetrical Y-connected 3-phase heaters
and symmetrical or asymmetrical Delta-connected heaters.
TTC25X is only intended for electric heating control. The control
principle makes it unsuitable for motor- or lighting control.
TTC25X is intended for DIN-rail mounting.
Control principle
TTC25X pulses the full load On - Off. TTC25X adjusts the mean
power output to the prevailing power demand by proportionally
adjusting the ratio between On-time and Off-time. The cycle time
(=the sum of On-time and Off-time) is adjustable 6...60 seconds.
TTC25X has zero phase-angle firing to eliminate RFI.
Mount TTC25X on a DIN-rail in a cabinet or other enclosure.
Mount TTC25X vertically with the text right side up.
Protection class IP20.
Ambient temperature 0...40°C
N.B. TTC25X emits approx. 45W of heat at full output which must
be dissipated.
Supply voltage (fig 1)
Terminals L1in, L2in and L3in.
Supply voltage 210...255 or 380...415V AC
3 phase, 50:::60 Hz with automatic voltage
adaption.
Maximum current 25A/phase.
N.B. The supply voltage to TTC25X should be wired via an all-pole
switch with a minimum contact gap of 3mm.
N.B. TTC25X must be earthed.
Load (fig 1)
Terminals L1out, L2out and L3out.
Resistive 3-phase heater without neutral.
Maximum load: 3300W/phase at 230V phase - phase voltage .
5750W/phase at 400V phase - phase voltage.
Minimum load: 530W/phase at 230V phase - phase voltage.
920W/phase at 400V phase - phase voltage.
Installation
Wiring
INSTRUCTIONS
Control signal (fig 2)
Terminals 8 and 9.
Terminal 8 = Signal neutral.
Terminal 9 = 0...10V DC.
0V input signal will give 0% output and 10V input will give 100%
output.
NOTE: Do not leave the input unconnected since an open
circuit will not give 0% output but approx. 50%.
To ensure 0% output when no control signal is connected the
control input should be short-circuited.
Settings
CT Cycle time. 6...60 seconds. The sum of one On-period and
one Off-period.
Start-up and fault finding
1. Check that all wiring is correct. Make sure the supply voltage
is switched off.
2. Measure the resistance between terminals L1out - L2out,
L1out - L3out and L2out -L3out:
At 230V phase-phase voltage: 10.6Ω<R<64Ω.
At 400V phase-phase voltage: 18.4Ω<R<115Ω.
3. Connect supply voltage and set the input signal to 10V DC.
The LED on the TTC25X should be continuously on. Set the
control signal to 0V DC. The LED should be continuously off.
At intermediate positions the LED will pulse On-Off as the
TTC25X pulses current to the heater. The pulse cycle period
is approx. 6...60 seconds depending on the setting of the
CT-potentiometer. Check with a clamp-on ammeter that
current is flowing to the heater.
EMC and LVD:
This product conforms with the requirements of European EMC
standards CENELEC EN 50081-1 and EN 50082-1 and
European LVD standards IEC 669-1 and IEC 669-2-1 and
carries the CE mark.