of the revolutions (n min ) if curves C and D are selected. The type of the regulation curve can
be chosen and fixed by jumpers J1 and J2, according the table shown at Figure 1b.
Figure 2
The core of the control process is in the provided additional compensation of the
semistor current angle. In fact each voltage increasing will decrease the current angle and on
the other hand, each increasing of the loading current will increase the semistor current angle.
Actually that prevents decreasing of the revolutions during increasing of the shaft mechanical
loading, as well increasing of the revolutions during increasing of the power supply. The
compensation effect is getting bigger during turning TR4 element counterclockwise. Such a
control is very suitable for motors with variable loading, for temperature control pumps in
heating systems with thermo-valves, where it provides permanent pressure level at variable
flow.
The protection against current overloading is provided at two levels In and 1.4In. If
the loading current reaches the level In, the LED1”I>” indication will be activated without
stopping the motor. If the loading current keeps increasing until it reaches the level 1.4In, the
motor will go into minimal revolutions regime fixed by TR5. On the other hand, after
decreasing of the loading current down to 0.5In the LED1”I>” indication stops and the motor
is automatically restarted with a smooth start-up.
The adjusting of the current protection can be done by turning TR6 element clockwise
to the end. The motor is settled by force in maximum revolutions regime (that correspond to
current level In.) by switching off the thermo sensor “TS” of its terminals 11 and 12, and
placing the jumper J1 at a position related to curve A (Figure 1b). After that TR6 element
must be turned smoothly counterclockwise, until LED1 “I>” light indication appears,
afterwards TR6 must be turned back slowly until the light indication stops remaining it in that
position.
Adjusting of the minimal revolutions level is provided by switching off the sensor
“TS” from terminals 11 and 12, and placing the jumpers J1 and J2 according curve B (Figure
1b). The minima level of the revolutions can be adjusted by means of TR5 element.
The motor can be stopped or started by remote circuit closer placed outside the
Regulator body. The motor operates if the circuit closer is closed and it stops if the circuit
closer remains open.
4. Technical data
1. Power supply: 220V/50Hz/AC
2. Nominal capacity of the electrical consumer: 1kW
3. Input for remote starting and stopping: 50mA
4. Range of temperature measuring: (00C) (+1000C)
5. Range of temperature regulation: (+200C)-(+1000C)
6. Time for a smooth start-up: 6 sec.
7. Range of revolutions minimal level: 10-40%
tel.: 00
59
596.
.66
|||
fax: 00
59
596.
25.
80 |
|| i
[email protected] |||
www.intiel.com9 Peter Beron Str., Pomorie 8200, Bulgaria
