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PULSAR MEASUREMENT
147
Consider the example of an application using 2 pumps. Each pump is
connected and controlled by one of the UltraTWIN relay outputs, the pump
duty and setpoints have been programmed as detailed in
Using the Relays
,
earlier in this chapter. The signals provi
ding details on the “lead” or “duty”
pump ‘status’ are connected to the digital inputs as described in
Chapter 2
Installation
, and the input
Type
P*372, 375, 378, 381, 384, 387, 390 is
configured as detailed in
Input Type
, earlier in this chapter.
Pump 1
is connected and programmed to operate on
Relay 1
Pump 2
is connected and programmed to operate on
Relay 2
Duty Input 1
signal is connected to
Digital Input 3
Duty Input 2
signal is connected to
Digital Input 4
When no signals are present on either Digital Input 3 or Digital Input 4 then
devices will run in the “
auto
” mode, as determined by the
Ulrta Twin, in
accordance with its programmed settings. If a signal is seen on Digital Input
3,
duty
selected for
Pump 1
, then the pump connected to Relay 1 will
ass
ume the role of “lead”/duty” pump, regardless of the settings
programmed in the UltraTWIN. When the level rises to the
ON Setpoint
, for
the
first
pump, relay 1 will energise and Pump 1 will ‘start’, in the normal
manner. If the level continues to rise, then relay 2 will energise and Pump 2
will start in accordance with the settings programmed for pump 2.
If a signal is seen on Digital Input 4,
duty
selected for
Pump 2
, then the
pump connected to Relay 2 will assume the role of “lead”/duty” pump,
regardless of the settings programmed in the UltraTWIN. When the level
rises to the
ON Setpoint
, for the
first
pump, the relay 2 will energise and
Pump 2 will ‘start’, in the normal manner. If the level continues to rise, then
relay 1 will energise and Pump 1 will start in accordance with the settings
programmed for pump 2.
Содержание UltraTWIN
Страница 1: ...UltraTWIN UL Instruction Manual...
Страница 2: ...2...
Страница 15: ...PULSAR MEASUREMENT 15 EU Certificate of Conformity...
Страница 24: ...ULTRATWIN UL INSTRUCTION MANUAL 24 Fascia Mount The terminal details are as illustrated below...
Страница 213: ...PULSAR MEASUREMENT 213 NOTES...