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20
Control
DELETION OF RECORDS
In the last part of Level 2 of the Navigation Menu, the user can
delete the historical graphs and alarm records from the internal
memory of the pGD Touch terminal.
NOTE: If records are deleted, it is NOT possible to recover
them later.
SETTINGS
The Global system configuration is protected with the Level 3
password.
In the “Configuration” section you will find the global parameters of
the system. These are separated into 3 categories.
• Restart Delay: If the control is Off, when it is restarted the
controller will wait this time before starting the regulation
process.
• Enable unit power on via Digital input
• Select operation mode
• Set point safety limits
NETWORK COMMUNICATION
The BMS2 control port can be used to monitor the entire system
remotely with an external supervisor via Modbus RTU protocol.
• In this screen the user sets the parameters of the
communication protocol to be connected to an external device.
These parameters are:
• Address
• Speed (Baud per second)
• Stop bits
• Parity
DEFROST CONFIGURATION
Only for Air-Water systems with Heat Pump function.
1. Enable Defrost Sequence
2. Enable defrost at controller startup
3. Defrost Interval (How often defrost is initiated)
4. Defrost activation
(By temperature / by defrost)
• By temperature (Start temperature)
• By time (Elapsed time)
5. Drip Duration (Stop condensing unit to allow drainage)
6. Defrost Duration
7. Activate fan during drip
8. Defrost stop
This section contains the parameters for device configuration for
each unit.
On the first page of the section, the user can enable or disable
units to prevent them from operating (e.g. during maintenance).
Disabled units are ignored during the rotation algorithm and may
not turn on during demand.
The minimum demand to start the “Mother” unit is also set here.
If the unit is modulated by an unloader the period is also set here.
It can also be determined if the units are of different capacities
(only if there is at least one “Child” unit).
On the second page of the “Devices” section the user will set the
parameters for the alarm sequences. The display consists of 4
groups (5 if the units are air-water); the alarm sequences are as
follows:
• Water Flow Alarm
• Cold Water / Freezing Alarm
• Low Vacuum Pressure and High Discharge Alarm
• Refrigerant Alarm
• High Temperature Alarm on Condensing units (Air-to-Water
units only)
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