BIA-nXt-SPC3 Instruction Manual V1.0 7
6. Technical Specifications
Controller Modes
Automatic or Manual pump operation.
Liquid level control via float switch, electrode probes OR 4-
20mA level transducer.
Pressure control via pressure switch or 4-20mA transducer
Protection functions: Dry run (Underload), Overload, Pump Stalled,
Transient surge, Under voltage, Over voltage,
Phase reversal, Open phase protection
Repeated start, Short circuit, Over temperature
Over temperature requires an optional relay
Input Voltage 415V +10% -6%
Rated output power
SPC 3-40 nominal 0.37 to 4 kW P2 power (max 12A input)
SPC 3-11 nominal 2.2 to 11 kW P2 power (max 25A input)
SPC 3-15 nominal 7.5 to 15 kW P2 power (max 32A input)
Minimum working current SPC 3-40 = 1 amp SPC 3-11 = 5 amp SPC 3-15 = 10 amp
Working temp -25 to +55 deg C
20% to 90% relative humidity, non-condensing
Controller size 342mm wide, 253mm tall, 130 deep. IP54
Trip response times (set) Open phase – Less than 2 sec
Short circuit – less than 0.1 sec
Trip Voltage
(User adjustable)
Over voltage – Default = 437V
Under voltage – Default = 304V
Trip response times
(User adjustable)
Dry run (Under-load) 5 sec
Under Voltage Less than 5 sec
Over voltage Less than 5 sec
Recovery times
(User adjustable)
Dry run (Under-load) 45 min default
Overload 4 min default
Under Voltage 4 min default
Over voltage 4 min default
RS485 Technical interface
RS485 Bus Interface: asynchronous semi duplex
1200,2400,4800,9600 bps (default 9600bps)
MODBUS protocol (RTU)
Alarms Visual and audible alarm. Supports external alarm connection
To avoid ‘nuisance’ alarming, many of the default protection parameters
have values with a wide tolerance. The installer is encouraged to optimise
the settings to achieve optimum results
