Stage anomaly, in this case the COPS reacts by signalling the alarm condition, and keeps
the output switched on looking forward to self-recovery.
Whenever the NC contacts on the COPM 28 are used, you must consider an inverted
feedback signalling.
5.8 POWER SUPPL
Y FAILURE, in this case an alarm signalling occurs through the relay contacts
only, no other shining or acoustic signallings take place and this anomaly is not stored in the
alarm memory.
6. AUXILIARY FUNCTIONS
In addition to what we described above, the COPS 80 performs other functions with the purpose of
facilitating the work of those who have to use it.
6.1 LANGUAGE
. In any moment it's possible to change the language on the display by selecting
it with par.3 among those available.
6.2 DISPLA
Y CONTRAST. Through par.4 it's possible to change the LCD display contrast. It
allows to adjust indication readability to the best according to the operator's viewing angle
or ambient light.
6.3 PRESSURE
"TEMPERATURE CONVERSION. Parameter 21 allows to select the refrigerant
media used in order to correctly convert the setpoint and gauge pressure measured in its
equivalent boiling temperature.
6.4 PROBE OFFSET
. If the value read by the pressure transmitter does not match the pressure
applied to it perfectly, it's possible to proceed to recalibration (see 7.) or add a constant
correction value across the whole measuring range through par.22.
6.5 MAINTENANCE
. If wishing to obtain an automatic periodical maintenance warning, it's
possible to act on par.40...48. For example, if it's necessary to intervene after 5,000
compressor run hours, set par.40=5,000. When any of the compressors achieves 5,000 run
hours, LED [2] lights up.
Now, after having performed the intervention required, you may enter PROGRAMMING at
level #3 and clear the hour counters (par.41...48) to repeat the cycle or shift par.40 to the
next warning (ex. par.40=10,000).
Warning: the counters have a maximum capacity of 32,000 hours and are used to
accumulate the run hours and for the FORCED ROTATION. It's therefore necessary to clear
them before the overflow.
7. RECALIBRATION
Should it be necessary to recalibrate the COPS 80, then act in the following way: enter
PROGRAMMING at level #3; put par.22 to zero; check that par.23,24,25 are correct. By means
of an accurate current source, suitably connected to the controller input, give the current
programmed in par.23 (0 or 4mA).
Point par.49, operate keys [4]+[5] until the display indication matches the correct value (par.24).
Now increase the current to 20mA and point par.50, always by means of keys [4]+[5] match the
displayed pressure with the one programmed in par.25.
After recalibration, exit from programming.
8. SERIAL COMMUNICATION
The COPS 80 is fitted with RS485 serial port allowing to take part in a data communication network
managed by a master PC. The data base puts all measurement and control data on the net. Through
par.17 you program the controller identification number.
For a detailed data organization description and communication protocol details, read the specific
documentation.
WARRANTY
LAE electronic Srl warrant that their products are free of any defects in workmanship and materials for a period of
1 (one) year from date of production shown on the enclosure. LAE electronic Srl shall only repair or replace those
products of which defects are due to LAE electronic Srl and recognised by their technicians. LAE electronic Srl are
not liable for damages resulting from malfunctions of the products.
Defects due to exceptional operating conditions, misapplication and/or tampering will void the warranty.
All transport charges for returning the product to the manufacturer, after prior authorisation by LAE electronic Srl,
and for the return to the purchaser are always for the account of the purchaser.
6
TECHNICAL DATA
Dimensions 192x96x60 mm
Operating temp. -10°C ...+50°C
Range -1.00 ...+9.00 bar
Resolution 0.01 bar
Pressure input 0/4 ... 20 mA
Transmitter supply 8 ... 16Vdc
Auxiliary inputs 110-240Vac; 5 mA
Alarm relay output SPDT; 5 A 240Vac
Supply voltage 230 Vac, ±10%; 50/60Hz
Consumption 4VA
Protection on front IP 54
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