Emerson unidrive sp

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SM-Encoder Pl

Parameter

structure

Keypad and

display

Parameter

x.00

Parameter

description format

Advanced parameter

descriptions

Macros

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Electronic

nameplate

Performance RFC mode

288 Unidrive SP Advanced User Guide

www.controltechniques.com Issue Number: 10

This Solutions Module does not have its own freeze input, therefore the freeze input must come from a SM-Applications or SM-Universal Encoder

Plus. The freeze data is processed every 4ms x number of dumb modules installed. If a freeze has occurred and the freeze flag (Pr x.39) is zero, the

position data is stored in Pr x.35 and Pr x.36 and the freeze flag is set. The freeze flag must be reset by the user before the next freeze event is

stored.

At power-up Pr x.45 is initially OFF (0), but is set to On (1) when the SM-Encoder Plus can provide position feedback. Pr x.45 then remains at On (1)

while the drive is powered-up.

If Pr x.49 is set to one, Pr x.04 and Pr x.05 are not updated. If this parameter is zero, Pr x.04 and Pr x.05 are updated normally.

The error status is provided so that the only one option error trip is required for each Solutions Module slot. If an error occurs, the reason for the error

is written to this parameter and the drive may produce a ‘SLX.er’ trip, where X is the slot number. A value of zero indicates the Solutions Module has

not detected an error, a non-zero value indicates that an error has been detected. (See Table 5-15 on page 280 for the meaning of the values in this

parameter). When the drive is reset, this parameter is cleared.

The Solutions Module includes a temperature monitoring circuit. If the PCB temperature exceeds 90°C, the drive fan is forced to operate at full speed

(for a minimum of 10s). If the temperature falls below 90°C, the fan can operate normally again. If the PCB temperature exceeds 100°C, the drive is

tripped and the error status is set to 74.

x.39 Freeze flag

RW Bit NC

OFF (0) or On (1)

OFF (0)

Update rate: 4ms x number of dumb modules

x.45 Position feedback initialised

RO Bit NC PT