SIEB & MEYER FC2, Manual

Page: 37 / 73

8.8.1 Inputs
The two active load inputs and the two reference value inputs are independent inputs
and conceived as differential amplifiers. A filter, the switching hysteresis and the
scaling can be programmed as desired. The maximum input voltage is ±10 V.
Reference value input (+/-)
Preset reference values are reached by the frequency converter at the programmed
acceleration and deceleration times. The reference speed value is preset as analog
voltage value at the control interface. Thus, the motor is always under control and is
not loaded with frequency variations when another reference value is set.
The reference value is digitalized by means of a 12 bit A/D converter and transmitted
to the processor. A reference voltage of +10 V is output at the control interface for
generating external reference values.
Active load threshold (+,-)
The load message is equipped with a variable switching threshold. This switching
threshold can either be determined via the analog input “Load” (+,-) or via program‐
ming.
8.8.2 Outputs
There are two independent analog outputs provided:
▶ programmable analog output 1
▶ Programmable analog output 2
The following functions can be assigned to the outputs:
▶ Target speed
▶ Speed reference value
▶ Speed actual value
▶ Slip
▶ Current actual value
▶ Power output stage temperature
▶ Motor load
▶ Power output stage load
▶ Power output stage voltage
▶ Load
The following parameters can be altered for each output individually:
▶ Inverter
▶ Filter time
▶ Scaling
▶ Analog offset
Target speed
The set speed value is generated, whether it was enabled by the start input or not.
Speed reference value
The current speed reference value is generated. Thereby the releases and the times of
the ramps are considered.
W
Connectors
FC2 - Frequency converter 02192100xy 37
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