Venture Industries DH-R Betriebsanleitung Seite 17

Fig. 5 Scheme of power supply connections
5.1 DH-R - power supply:
DECRIPTION OF PINS:
L1, L2, L3 – three-phase power supply of the heaters
Z – terminals of the set of temperature limiters
PE – protective conductor
TR – automatic limiter
TB – limiter with manual reset (manual limiter)
T1 – triacs
DESCRIPTION OF PINS:
1-2 ALARM OUTPUT POTENTIAL-FREE NO, max. 1,0A, 250V.
3-4 OUTPUT NC, OPERATION PERMISSION (SWITCH)
5-6 INPUT NO, NIGHT SETBACK
7-8 INPUT ANALOG CONTROL SIGNAL 0-10V
9-10 MAIN INPUT TEMPERATURE SENSOR
11-12 INPUT TEMPERATURE CONTROLER
13-14 INPUT TEMPERATURE SENSOR MIN-MAX
15-16 INPUT OF TEMPERATURE SENSORS TRIACS
OUTPUTS 15-16 AND 21..27 SĄ ARE FACTORY CONNECTED AND SHOULD NOT BE CHANGED
3.3 CONTROL GUIDELINES

The heaters DH-R are equipped with the internal control system AHR-15T.

For proper operation the system requires adequate connection of external accessories (eg. temperature sensor), which are not included
with the device.

Automatic control system cooperates with sensors type NTC (15÷10kΩ/0÷30
o
(0÷5kΩ/0÷30 C).

The microprocessor controls the switching of 2 triacs in a time cycle, by changing the activation time of heating elements of the heater in
the way to keep the setpoint temperature settings. The length of the cycle is set by a potentiometer RT [s] in the range 1÷20 s (according
to a logarithmic scale). Depending on strength of error signal (the difference between setpoint temperature and the measured value) the
activation time changes in the range from 0÷100% of the time cycle, according to the control algorithm of the controler type PI. It is not
recommended to set up too long time cycle of RT.
tel. (22) 751 95 50
OPERATION MANUAL NO DH-R_2017 (EN)
5.2 AHR-15T – control system:
DESCRIPTION OF POTENTIOMETERS:
RT [s] - cycle length adjustment control
o
Night [ C] – night setback setpoint
o
T [ C] – internal setpoint of the reference value of the temperature
o
Min [ C] – setpoint of the minimum temperature
o
Max [ C] - setpoint of the maximum temperature
Attention! Setting min and max are taken into account only when the
temperature limit sensor is connected. To terminals 13-14, the sensor is
automatically detected.
FUNCTIONS OF JUMPERS:
Int Temp – active internal setpoint adjuster T [oC]
0-10 V – active input of analog signal 0-10V DC
Ext Reg – control by an external controller (0-10V)
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o
C) and potentiometric temperature adjusters
fax. (22) 751 22 59 17