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C-PRO NANO HPR0 APPLICATION MANUAL
Page 23
5.4 Compressors status
The compressor has one functioning state associated, which can be seen via the relative LED or in
the states mask from the main menu. The compressor assumes the following states:
- On: “On” appears on the state mask
- Switch-on stand-by: the compressor is in stand-by due to the switch-on protection times.
“tOn” appears on the state mask
- Off: “OFF” appears on the state mask
- Switch-off stand-by: the compressor is in stand-by due to the switch-off protection times.
“tOFF” appears on the state mask
5.5 Protection times
Below find a list of all times relative to the management of the compressors
These times are used to protect the mechanical means from the various peaks to which they are
subjected.
The settings are unique for the two compressors in this application.
Compressors switch-on minimum time. Once activated, the compressor will remain on for this
period of time before it can be switched off. (parameter PC04)
Compressors switch-off minimum time. Minimum time that must pass from last switch-off before
the compressor can be switched back on again. (parameter PC05)
Minimum time between switch-ons of the same compressor. Establishes the minimum time that
must pass between two switch-ons of the same compressor . (parameter PC06)
Compressor 1 switch-on minimum time. Minimum time for which the switch-on condition of the
first compressor to be switched-on must remain. (parameter PC07)
Compressor 2 switch-on minimum time (HP). Minimum time for which the switch-on condition of
the second compressor to be switched-on must remain (in winter mode). (parameter PC08)
Compressor 2 switch-on minimum time (chiller). Minimum time for which the switch-on condition
of the second compressor to be switched-on must remain (in summer mode). (parameter PC09)
Compressor 1 switch-off delay after high pressure alarm. Compressor block delay after HP alarm.
(parameter PC10)
Minimum time between pump switch-on and switch-on of the first compressor. Once both pumps
have been activated, the compressors will wait for a delay that can be set by parameter to be started.
(parameter PP04)
5.6 Safety Inputs
The program DOES NOT envision the management of a “compressor thermal switch” safety input
for every compressor. It only envisions HIGH and LOW pressure compressors protection, via
mechanical ON-OFF pressure switches.
- CHILLER – HEAT PUMPS 1
- 2 COMPRESSORS 1
- 1.1 I/O 5
- 2 Functioning 9
- 3 User Interface 14
- 3.2 List of pages 15
- 3.3 Password 15
- 3.4 Main OFF page 15
- 3.8 User Menu 16
- 3.5 Main ON page 16
- 3.6 Main Menu 16
- 3.7 StAt menu 16
- 3.10 Manufacturer Menu 17
- 4 List of Parameters 19
- Page 20 20
- 5.1 Machine state 21
- 5.4 Compressors status 23
- 5.5 Protection times 23
- 5.6 Safety Inputs 23
- 5.8 Pump status 24
- 5.9 Pump protection times 24
- 6 Programming 26
- 7 Alarms 27
- Page 29 29
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