The update rate for analog outputs is 250μs; although the output will only change at the update rate defined by the source parameter for the input. The

following exceptions apply:

1. Speed Feedback (03.002) has an update rate of 4ms and includes a 16ms window filter. If this parameter is selected as a source for output 2

the update rate of the source changes to 250us and the only filter applied is the window filter associated with the position feedback interface

(i.e. P1 Feedback Filter (03.042) for the P1 interface). It should be noted that this feature is only provided when the position feedback is from a

drive interface and not from an option module.

2. If either analogue output is set up for current mode then the update rate for both analogue outputs is 4ms.

Analog Inputs

The normal sample rate for the analog inputs is 4ms, however this is increased to 250us for analogue inputs 1 and 2 under the following conditions:

1. The maximum and the minimum for the input are at their default values of 100.00% and -100.00% respectively.

2. The input is set to voltage mode.

3. One of the destinations given in the table below must be selected.

4. If the destination is Analog Reference 1 (01.036) or Analog Reference 2 (01.037) the reference system must not be in uinpolar mode, i.e.

Bipolar Reference Enable (01.010) must be one.

Note that Analogue Input 1 Fast Update Active (07.026) and Analogue Input 2 Fast Update Active (07.027) indicate if fast updating is active for each

input.

Drive

Parameter

modes

RFC-

Analog Reference 1

(01.036)

RFC-S

RFC-

Analog Reference 2

(01.037)

RFC-S

RFC-

Hard Speed Reference

(03.022)

RFC-S

RFC-

Torque Reference

(04.008)

RFC-S

Power Input 1

Power Input 2

Regen

Power Input 3

The diagram below shows the parameter structure for each I/O. See Internal I/O Identifier (11.068) for details of which I/O is present for different I/O

options.

Powerdrive F300 Parameter Reference Guide

Issue: 01.15.00

Comment

The data from Analog Reference 1 (01.036) is processed in the 250us

task so that the reference to the speed controller is updated every

250us.

The data from Analog Reference 2 (01.037) is processed in the 250us

task so that the reference to the speed controller is updated every

250us.

111