Simulated Encoder Output Set-Up; Freeze Function; Termination Resistors - Control Techniques SM-Encoder Plus User Manual

5.3

Simulated encoder output set-up

SM-Encoder Output Plus only
The following parameter set-up should be followed to obtain a simulated encoder
output.
Function
Simulation
source
Simulation
ratio
Simulation
output mode
5.4

Freeze function

The SM-Encoder Plus and SM-Encoder Output Plus have a freeze function, but do not
have freeze inputs. The freeze function can be activated using either the SM-
Applications or SM-Universal Encoder Plus. When a freeze signal is applied, the freeze
flag (Pr x.39) is set to "ON". When activated, the non-marker position data (Pr x.29 and
Pr x.30) is transferred into Pr x.35 and Pr x.36.
The freeze flag does not reset itself. Before carrying out consecutive freeze functions,
the SM-Encoder Plus or SM-Encoder Output Plus freeze flag must be cleared by the
user (Pr x.39 = "OFF").
If a SM-Universal Encoder Plus is used as a freeze input, it must be set to freeze the
NOTE
drive position by setting Pr x.40 to "On". Also, before consecutive freeze operations can
be performed in the SM-Encoder Plus or SM-Encoder Output Plus, the SM-Universal
Encoder Plus freeze flag (Pr x.39) must be cleared together with the SM-Encoder Plus
or SM-Encoder Output Plus freeze flag (Pr x.39).
E.g. If slot 3 has a SM-Universal Encoder Plus fitted and slot 2 has an SM-Encoder Plus
fitted, Pr 16.39 and Pr 17.39 need to be set to "OFF" before another freeze function can
be performed on the SM-Encoder Plus or SM-Encoder Output Plus.
5.5

Termination resistors

By default the termination resistors on the encoder inputs are enabled with the
exception of the marker pulse inputs which are disabled. The termination resistors can
be can be configured as shown below using encoder termination Pr x.16.
Terminal
1, 2
3, 4
5, 6
The termination resistance when connected (A, A\) = 120Ω total.
SM-Encoder Plus & SM-Encoder Output Plus User Guide
Issue: 4
• Set the source of the simulated encoder output in Pr x.24.
x.05: The encoder input on the Solutions Module
3.29: The encoder input on the drive
• Set the required ratio between the source and output lines per revolution in
Pr x.25.
1.0000: ratio of 1
0.5000: ratio of 1/2
0.2500: ratio of 1/4
0.1250: ratio of 1/8
0.0625: ratio of 1/16
0.0312: ratio of 1/32
• Set the required encoder simulation mode in Pr x.28.
0: Ab – Quadrature outputs
1: Fd – Frequency and direction outputs
2: Fr – Forward and reverse outputs
3: Ab.L – Quadrature outputs with marker lock
4: Fd.L – Frequency and direction outputs with marker lock
Encoder Input
A, A\
B, B\
Z, Z\
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Detail
Pr x.16=0 Pr x.16=1
Disabled Enabled
Disabled Enabled
Disabled Disabled
Pr x.16=2
Enabled
Enabled
Enabled
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