EVCO c-pro mega RACK - Manual (Page 82)

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL
Page 82
The “compressor high/low pressure pressure-switch” safety device manages up to a maximum of 6
compressors and is enabled by setting two parameters as follows:
Safety device number: 2 / 3
Safety device type: 2 / 4
To enable the alarms associated with these safety devices, besides setting the above-described
parameters, it is also essential to set the positions where the digital inputs relating to the various
alarm types will be connected from within the System builder ->Hardware menu. Where there is no
desire to set an alarm, simply set the parameter to the value 0.
The number of safety devices that can be used is limited by the number of available digital inputs
(depending on the hardware used) and the number of compressors configured.
Please note. If the number of safety devices is greater than or equal to 1, then the “compressor
thermal” safety device is always selected.
6.4.8 Inverter configuration
For each inverter used must be selected the digital output position for the command/consent to the
inverter start; for the configuration are used the same parameters of the compressors digital outputs,
parameters HC01..HC10, HC50, HC60. The inverter is virtually the first compressor of each circuit,
then according to the quantity of compressors and the quantity of circuits must be set the correct
parameter according to this logic.
- 1 circuit: The inverter (if enabled) is virtually the compressor 1; is necessary to
configure the parameter of the first compressor, then must be always configured the
parameter HC01.
- 2 circuits: The inverter of circuit 1 (if enabled) is virtually the compressor 1 (then,
must be configured the parameter HC01), the inverter of circuit 2 (if enabled) is
virtually the first compressor after the circuit 1 compressors.
- 3 circuits: The inverter of circuit 1 (if enabled) is virtually the compressor 1 (then,
must be configured the parameter HC01), the inverter of circuit 2 (if enabled) is
virtually the first compressor after the circuit 1 compressors, the inverter of circuit 3
(if enabled) is virtually the first compressor after the circuit 1 and 2 compressors.
Note. The parameter PH20 modifies the logic for the inverter consent.
Configuration examples.
1) N°1 circuit (PG01=1), n°2 Compressors (PG11=2), Inverter enabled (PG12=1). A correct
configuration is:
HC01 = 1 -> digital output for the inverter consent
HC02 = 2 -> digital output for the hermetic compressor command
HC31 = 1 -> analog output per the inverter command.
2) N°2 circuits (PG01=2), n° 2 compressors for each circuit (PG11=2, PG15=2), both inverter
enabled (PG12=1, PG16=1). A correct configuration is:
HC01 = 1 -> digital output for the circuit 1 inverter consent
HC02 = 2 -> digital output for the circuit 1 hermetic compressor command
HC03 = 3 -> digital output for the circuit 2 inverter consent
HC04 = 4 -> digital output for the circuit 2 hermetic compressor command
HC31 = 1 -> analog output for the circuit 1 inverter command
HC32 = 2 -> analog output for the circuit 2 inverter command