Armstrong AGE4, Инструкция по установке и эксплуатации

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Twin pump operation
Twin pumps have double hydraulic housing with integrated check valve, which automaticaly turns based on flow,
and two separated motors. AGE4D pumps do not have a control logic that ensures the continuous operation of
at least one pump - the control logic must be carried out by the customer / user himself. It is recommended that
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AGE4D pumps communicate with each other and have the following features:
x
Alternating operation [default setting] – One pump is operating while the other one is on standby.
Pumps switch their role every 24 hours or when an error occurs on one pump.
x
Backup operation – One pump operates constantly and the other one is on standby. If an error occurs
on the operating pump the one on standby will automaticaly start working. This mode can be set up by
turning off the pump that we wish to be on standby.
x
Parallel operation – Both pumps work at the same time with the same settings of constant pressure.
This mode is used when greater flow than one single pump can output is needed. When the first pump
hits its flow limit the second one turns on and compliments the first to reach desired flow. This mode is
activated when we set both pumps to constant pressure mode. Night mode is not recommended.
5.7 PUMP REMOTE CONTROL OVER RS 485 COMMUNICATION BUS
5.6.1 RS-485 RELATED INTERFACE
5.6.2 PROTOCOLS SUPPORTED
x
Modbus RTU or BACnet MS/TP [default]
NOTE : Selectable over Web interface. Only single protocol can run at a time.
5.6.3 BUS TOPOLOGY
RS-485 Connection can be made in either daisy chain style (if cabling allows such a connection) or a limited
length passive tap. Schematic example in figure below.