Cs1W-Pmv01 Isolated-Type Analog Output Unit - Omron SYSMAC CS Series Operation Manual

CS1W-PMV01 Isolated-type Analog Output Unit

Accumulation Data is Different from the Number of Pulses Input.
Probable cause
Input signals are being affected
by external noise.
The pulse weight or accumulation
stepdown settings are incorrect.
Pulses exceeding the allowable
frequency are being input.
Pulses with defects such as chat-
tering are being input.
Instantaneous Values Do Not Change.
Probable cause
The gain for span adjustment is
set to 0.
The instantaneous value when
input 100%, or the maximum
instantaneous value in the range,
is set to 0.
Instantaneous Values are Not Converted as Intended.
Probable cause
The instantaneous value when
input 100%, or the maximum
instantaneous value scaling
value, is incorrect.
The zero/span adjustment data is
incorrect.
Input pulses are too slow (i.e., the
pulse rate is to low).
There is pulsating in the instanta-
neous value.
2-9 CS1W-PMV01 Isolated-type Analog Output Unit
Overview
Change the connection paths of the input signal lines. (Separate them from sources of
noise or use shielded cable.)
Insert 0.01-µF to 0.1-µF ceramic capacitors between the positive and negative input
terminals.
Check the pulse weight and accumulation stepdown settings.
Check the input signal waveform and correct them for the entire system.
Check the input signal waveform and remove chattering from external circuitry.
Set the gain for span adjustment to a value other than 0.
Set the instantaneous value when input 100%, and the maximum instantaneous value
in the range, to a value other than 0.
Check the instantaneous value when input 100%, the decimal point position, and the
maximum instantaneous value scaling value.
Check and correct the zero/span adjustment settings.
Lengthen the instantaneous value time unit (conversion period).
Set the number of values for moving average processing.
Each cycle, the CS1W-PMV01 Isolated-type Analog Output Unit converts up
to four analog output set values from the CPU Unit to either 4 to 20 mA or 1 to
5 V, and outputs them. It can also provide answer back for checking actual
output values.
Remedy
Remedy
Remedy
CS1W-PMV01
Section 2-9
111