Delta Electronics VFD-S manual Group 3 Output Function Parameters, 3-01, Analog Frequency Meter

Chapter 5 ParametersVFD-S Series

Group 3: Output Function Parameters

3-00Analog Output Signal (AFM)

Factory Setting: d0

Settings d0 Analog Frequency Meter (0 to Maximum Output Frequency)

d1 Analog Current Meter (0 to 250% of rated AC motor drive current) This parameter sets the function of the AFM output 0~+10VDC (ACM is common).

The voltage output type for this analog signal is PWM. It needs to read value by the movable coil meter and is not suitable for A/D signal conversion.

3-01	Analog Output Gain		Unit: 1
	Settings	d1 to d200%	Factory Setting: d100

The parameter sets the voltage range of the analog output signal at terminals AFM, that corresponds with either the output frequency or the output current of the VFD.

AFM GND AFM GND

+ -

+ -

Analog Frequency Meter Analog Current Meter

The analog output voltage is directly proportional to the output frequency of the AC drive. With the factory setting of 100%, the Maximum Output Frequency (Pr.1-00) of the AC drive corresponds to +10VDC analog voltage output. (The actual voltage is about +10VDC, and can be adjusted by Pr.3-01).

The analog output voltage is directly proportional to the output current of the AC drive. With the factory setting of 100%, the 2.5 times rated current of the AC drive corresponds to +10VDC analog voltage output. (The actual voltage is about +10VDC, and can be adjusted by Pr. 3-01)

The voltage output type of the output signal at terinals AFM is PWM, so this analog voltage is only suitable to connect an external movable coil meter, not suitable to connect a digital meter or for A/D signal conversion.

NOTE

Voltmeter specification: The sourcing capability of the output is limited to 0.21mA. Sourcing voltage: 10V. Output resistance: 47kΩ.

If the meter reads full scale at a voltage less than 10 volts, then Pr.3-01 should be set by the following formula: Pr.3-01 = ((meter full scale voltage)/10) ×100%

Revision August 2008, SE09, SW V2.61 5-31