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Unidrive M300/HS30 Quick Start Guide 53

Issue Number: 7

Motor Rpm = 60 x Frequency / Pole pairs

where

Pole pairs = the numeric value of Number Of Motor Poles (Pr 40) (i.e. 3 for a 6 pole motor)

The frequency used to derive the Motor Rpm is the Final Demand Reference (Pr 83). The maximum

and minimum values allow for a 10% over-shoot of the speed.

* With the Unidrive HS30, the maximum is 180,000.0 rpm

Current Magnitude is the instantaneous drive output current scaled so that it represents the r.m.s.

phase current in Amps under steady state conditions.

Torque Producing Current is the instantaneous level of torque producing current scaled so that it

represents the r.m.s. level of torque producing current under steady state conditions.

Digital I/O Read Word reflects the state of digital inputs/outputs 1 to 5 and the relay.

Reference On, which is controlled by the drive sequencer, indicates that the reference from the

reference system is active.

87 Motor Rpm

RO Num ND NC PT FI

±33000.0 rpm*

RFC-A

88 Current Magnitude

RO Num ND NC PT FI

0 to Drive Maximum Current A

RFC-A

89 Torque Producing Current

RO Num ND NC PT FI

± Drive Maximum Current A

RFC-A

90 Digital I/O Read Word

RO Bin ND NC PT

0 to 2047

RFC-A

91 Reference On

RO Bit ND NC PT

Off (0) or On (1)

RFC-A

Control Techniques 01100017 User Manual

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