EVCO c-pro mega RACK - Manual (Page 81)

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL
Page 81
SpeedUp time. If regulation by means of inverter is set, then this parameter, if other than zero, keeps
the inverter output at maximum value (100.0%) with each new step switch on request.
6.4.6 Startup delay from reset
By means of the parameter PC69 – TRestart in the Installer ->Compressors menu, it is possible to
delay compressor startup each time the controller is reset; for example, following a black-out
caused by a power cut.
6.4.7 Safety device inputs
The program envisages the management of 3 safety devices, with relevant alarms, managed by
means of 4 possible combinations. Based on the parameter safety device number (PG05) the
number of safety devices can be selected, and by means of the parameter safety device type (PH16)
the appropriate combination for the application can be selected. The three safety devices managed
are as follows:
⋅
Compressor thermal
⋅
Compressor oil differential
⋅
Compressor high/low pressure pressure-switch
The four combinations implemented are described in the following table.
Parameter Type Delay Reset
0 None - -
1 Thermal
Configurabl
e Configurabl
e
Thermal
Configurabl
e Configurabl
e
2
High/low pressure pressure-switch Immediate
Configurabl
e
Thermal
Configurabl
e Configurabl
e
3
Oil differential
Configurabl
e Configurabl
e
4
Thermal + oil differential + pressure-
switch
- -
The “compressor thermal” safety device manages all 12 compressors and is enabled by setting two
parameters:
Safety device number: 1 / 2 / 3
Safety device type: 1 / 2 / 3 / 4
The “compressor oil differential” 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: 3 / 4