Bell & Gossett 193 TECHNOVAR VARIABLE SPEED PUMP CONTROLLER AND INTEGRATED AJUSTABLE FREQUENCY DRIVE - Manual (Page 47)

Operating Instruction
47
internal controller of the Technovar will be shut off and the inverter changes to manual
mode. With the buttons and you can set any constant speed.
Setting of 0,0 Hz stops the inverter. If the JOG-MODE is left at a frequency higher than 0,0
Hz the inverter will continue its normal automatic operation.
Press on the Technovar to change to
10.2 Window - %
WINDOW
5%
This value indicates the max. variation of the outgoing
pressure (see diagram “Ramp window”).
Possible setting: between 0% - 100% of required pressure.
Press on the Technovar to change to
10.3 Ramp Hysteresis
RAMP HYSTERESIS
80%
Level, where the fast ramp changes to the slow
ramp (see diagram “Ramp window” )
Possible setting: between 0%..100% of the window
Press on the Technovar to change to
10.4 Ramp 1: Fast running up time:
Time setting at Ramp 1, 2, 3, or 4 will influence the control of the pump and
MUST NOT BE CHANGED at normal operation. Possible setting of each ramp 0,05 - 1000
sec.
RAMP 1
4.0 Sec
Excessively fast running up time may overload the
inverter in the starting moment.
Excessively slow running up time may cause a break down of the outgoing pressure during
operation.
Press on the Technovar to change to
10.5 Ramp 2: Fast running down time:
RAMP 2
4.0 Sec
Excessively fast running down time tends to cause
oscillation or hunting or can cause an error
(OVERVOLTAGE) during ramp down of the pump.
Excessively slow running down time tends to generate over pressure.
Press on the Technovar to change to