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3
Features and Functions
Section 1-1
Scaling Function
This function takes the value scaled in industrial units with respect to the input
signal and transfers it to the CPU Unit as the process value. Because of this,
no ladder program is required at the CPU Unit for scaling.
Process Value Alarms
Two process values can be set as alarm outputs (high and low alarms). Also,
an alarm notification can be passed directly to an output device by using the
Expansion Settings Area.
Alarm Hysteresis Settings
The hysteresis values can be set for the process value alarms. Frequent ON/
OFF switching of the alarm output can be eliminated by setting a dead zone
between the alarm output’s start and stop.
Alarm Output ON Delay
A fixed time delay can be set before the output starts for an alarm output (high
or low limit). The ON delay can be set between 0 and 60 s. Each channel’s
ON delay is set independently, but the same ON delay applies to the channel’s
high and low limit alarms.
Input signal
Industrial unit
4
20 mA
0
Lower limit
800 Pa
Upper limit
High limit alarm (H)
Low limit alarm (L)
Process value input
Alarm output (H)
Alarm output (L)
Hysteresis
Hysteresis
High limit alarm (H)
Low limit alarm (L)
Process value input
Alarm output (H)
Alarm output (L)
Summary of Contents for SYSMAC CJ1W-AD04U
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