Delt VFD Series - Page 46

46 of 81
Q When are parameters saved in EEPROM?
A We save the parameters in EEPROM at power off, except some special frequently
written parameters, such as Fcmd & Fpid. They are written in RAM.
Q How to set Pr10-00 for PID set-point?
A In VFD-EL Pr10-00=1 means it follows Pr02-00 setting.
Pr10-01=1 and:
Pr02-00=0: Setpoint via keypad UP/DOWN
Pr02-00=1: Setpoint AVI (same as Pr10-00=2)
Pr02-00=2: Setpoint ACI/AVI2 (same as Pr10-00=3)
Pr02-00=3: Setpoint via comm
Pr02-00=4: Setpoint via front potmeter
Q Why can the carrier frequency not be set >8kHz?
A When Pr00-10=0, then Pr02-03=12 it’s OK.
When Pr00-10=1 (vector mode) Pr02-03=12, but it goes back to 8kHz.
When Pr00-10=0, then Pr02-03=12 it’s OK, but when Pr00-10=1, Pr02-03 shows
8kHz.
So in vector mode max carrier frequency is 8kHz.
Q What is the temperature for OH1?
A OH1 happens when IGBT temperature >105°C. It can be reset when <72°C
Q What cable to use for the multi-pump function?
A See user manual page Pr-group 10.
The RS-485 wiring in VFD-EL as below:
EV is supply voltage to external keypad
GND is for communication cable shielding