CELLmatic 1502 – GSV/GSF
Issue: 2.1
User Manual
08.02.2004
Page 24 of 51
Thy
-
tronic
I/S – Bjørnevej 8c – DK 7700 Thisted – Tel.: +45 97982344 – Email.: [email protected]
SET POINTS
Set point I
03-06-96 16:48:15
SETPOINT/SETP I-L/SETP. I/
F6 CLA :
F5 NEW (F5) :Transform.factor 0.00
F4 NEW (F4) :Ampere max. 110.0 %
F3 NEW (F3) :Switch on heater 40.0 C
F2 HEAT SYST:Activ 0=NO 1=YES YES
F1 STOP : Stop
F5 TRANSFORMER
FACTOR
The transformer factor is entered in order that the computer will be able to calculate the full load current
of the motor. The transformer factor is determined by:
Transformer factor =
(input current corresponding to 20 mA output on the current converter instrument)
Full load current of motor
The current converter instrument must have a range of input current there go higher than the full load
motor current, so an over load can be measured. A range there goes up to 25% higher will be very
suitable.
Example: When using an instrument transformer where the primary current is 200 A and a motor with a
rated current of 180 A
The transformer factor will make =
200
180
= 1,11
F4:
AMPERE CONSUMPTION MAX
The motor current is calculated in per cent by means of the transformer factor set above. If this current
is exceeding the set point for max. ampere consumption set here the capacity of the compressor is
adjusted downward with a constant signal until the motor current has reached the set point for normal
motor current (see set point C/ F4). Together with this down regulation the message "AMPERE" will
appear on the message line of the display.
F3:
SWITCH ON HEATER
At this oil temperature, measured in the oil separator, the heater will be switched on when the
compressor is out of operation. The heater will switch off when the oil temperature exceeds the set point
by 5°C. A temperature higher than the ambient temperature should always be entered to avoid
condensation of refrigerant in the oil separator.
F2: HEATING
SYSTEM
Here it is determined whether the heater is to be switched on at standstill if the oil temperature
mentioned above is not reached. Furthermore, the heater will be switched off if the oil level in the oil
separator is too low.
