User Manual for PuraLev
®
2000SU
www.levitronix.com
PL-4034-00, Rev02, DCO# 20-144
34
State “Off”:
The pump system is switched off and the motor has no power. In this state,
Levitronix
®
Service Software
has
full control.
State “ON” (speed control mode):
The pump system is switched ON and the impeller is rotating with the referenced speed. The motor has
electrical power when in this state.
State “ON” (process control mode):
The pump system is switched ON and the impeller speed is controlled in order to get the referenced
flow/pressure. The motor has electrical power when in this state.
State “Error”:
16 occurs in the pump system, the system defaults to the
Error
state. The
designated digital output on the PLC Interface is activated. The pump system is switched OFF. By activating
the “
Reset”
input the system gets back to the “
Off”
state.
Error
Source
Errors
Effect on designated
Digital Output of the PLC
Motor
No pump head detected
Error = relay open
Motor
Temperature over 100°C
Error = relay open
Motor
Temperature was higher than 90°C for more than 10 minutes.
Error = relay open
Motor
Temperature more than 90°C
Warning = relay open
Motor
No motor temperature signal
Warning = relay open
Motor
Motor power cable not connected with controller
Error = relay open
Motor
Motor sensor cable not connected with controller
Error = relay open
Controller
Over-current
Error = relay open
Controller
Power channel interrupted
Error = relay open
Controller
Temperature over 80°C
Error = relay open
Controller
Temperature was higher than 70°C for more than 10 minutes.
Error = relay open
Controller
Supply voltage out of range (Power input)
(Ext. range: < 90 or > 378 V DC corresponds to < 64 VAC or > 267 VAC Input)
If the voltage is out of extended range the system starts to reduce the speed and
an error is generated. When reaching 0 rpm and the voltage is still out of extended
range the system is disabled.
Error = relay open
Controller
Supply voltage out of range (Power input)
(Nominal range: < 130VDC corresponds to 180VAC Input)
If the voltage is below nominal range still within extended range than performance
reduction may be possible at higher flows and speeds and warning is generated.
For DC voltages < 130 but >90 VDC the speed is limited to 4000 rpm.
Warning = relay open
Controller
Dry running situation has been detected.
Warning = relay open
Controller
Dry Running Detection
Pump keeps running on reduced speed (5000 rpm).
The system accelerates to the set speed value when the pump is refilled with liquid.
Note that the speed is only reduced during dry running if the pump speed
was ≥ 6000 rpm.
Warning = relay open
Table 16: Errors and warnings with indication on PLC interface
Note 1: Description is for standard firmware.
Note 2: For other configurations of error codes refer to alternate controller or firmware documentation.
