Yokogawa Data Acquisition with PID Control CX2000 User Manual

Page 255

7-9

IM 04L31A01-01E

Measurement Function Related Setup Operations

• Value

Set the alarm value for the selected alarm type.

• Relay On/Off

Select whether relay output is enabled [On] or disabled [Off]. If [On] is selected, the
[Number] entry box appears.

• Number

Set the alarm output relay number. When outputting the relay from the [ALARM]
terminal of the measurement alarm option terminal block (/A6, /A6R, /A4F, /A4FR),
select from [I01] to [I06]. When outputting the relay from the [DIGITAL OUT] terminal of
the control output terminal block, select from [DO001]to [DO006], [DO101] to [DO106],
or [DO201] to [DO206]. When outputting the relay from the [DIGITAL OUT] terminal of
the DIO expansion terminal block, select from [PO001] to [PO012]. For the
correspondence between the output relay numbers and the positions of the terminals of
the terminal blocks, see pages 2-6 and 2-7.
When outputting to the internal switches (SW001-SW36), select from SW001-SW036
(style number S3 or later).

• Detection

(Style Number S3 or Later)

Select whether to display alarms (ON) or not to display alarms (OFF) when they
occur. When turned OFF, they are not retained in the alarm summary.

Setting the Alarm Delay (When [Type] is set to [T] or [t])

• First-CH/Last-CH

Select the measurement channels for setting the alarm delay. The target channels
also apply to [Tag] and [Filter] or [Moving average] settings.

• Alarm delay

Set the alarm delay using an integer in the range of [1] to [3600] s.

Note

•

If the scan interval is 2 s and you set an odd value for the alarm delay, it will operate at “the

specified period + 1 s.” Example: If the alarm delay set to 5 s, the function will operate at 6 s.

•

For a description of the alarm delay setting of computation channels, see

section 10.3,

“Setting Alarms on Computation Channels.”

•

You can select internal control channels and external control channels for [First-CH] and

[Last-CH]. However, these channels do not have alarm outputs, and therefore the [Alarm

delay] setting is not available.

Setting the Alarm Relay Output and Alarm Details
The relay action when outputting the relay from the [DITIGAL OUT] terminal of the
control output terminal block is set on the setup screen in [Control] > [#4 Relay]. For the
setup procedure, see section 4.4, “Control > Relay.”

• Reflash

Set whether to enable [On] or disable [Off] the reflash alarm function of the alarm
relay output.

• Relay

• AND

Select the relays that are to operate using AND logic. Set the range of relays (from
the first alarm relay) to take the AND logic. All subsequent relays will be set to OR
logic. Available selections are [None], [I01] (I01 only), [I01-I02] (I01 and I02), •••,
[I01-I35] (I01 to I35), and [I01-I36] (I01 to I36). Only the relays that can be used on
the installed measurement alarm option terminal block (/A6, /A6R, /A4F, or /A4FR
option) are valid.

Note

If the reflash alarm is turned ON, [AND] setting is invalid. It is fixed to OR logic operation.

7.2 Settings Related to Measurement Alarms