Yokogawa µR20000 User Manual

Page 140

7-3

IM 04P02B01-01E

Setup

Operat

ons
for

Chang

ng/Add

Funct

ons
(Bas
c

Sett
ng

Mode)

App

Index

Reflash

Turns On/Off the reflash alarm operation of alarm output relays I01, I02, and I03.
When set to On, alarm output relays I01, I02, and I03 set to reflash alarm operation, and
the operation is fixed to OR, de-energized, and non-hold.

AND

Sets the AND/OR operation of alarm output relays.
None: No relays are set to AND operation. All relays are set to OR operation.
I01: Only I01 is set to AND operation.
I01-I** (where ** is the relay number): AND operation for I01-I**.

Act

Sets whether the output relay is energized or de-energized when an alarm occurs.
Energize: Energizes the relay when an alarm occurs. The relay is de-energized

during normal operation.

De_energize: De-energizes the relay when an alarm occurs. The relay is energized

during normal operation.

Behavor

Specifies whether to set the alarm output relay to hold operation or non-hold operation.
Nonhold: Releases the relay output at the same time the alarm is released.
Hold: Holds the relay output until the alarm ACK operation is executed.

Indcator

Specifies whether to set the alarm indication to hold operation or non-hold operation.
Nonhold: Releases the alarm indication at the same time the alarm is released.
Hold: Holds the alarm indication until the alarm ACK operation is executed.

Increase

Set the interval of the high limit on rate-of-change alarm to an integer between 1 and 15.
The interval is set to scan interval × (1 to 15).
Pen model: The scan interval is 125 ms. The maximum interval is 1.875 s.
Dot model: The maximum intervals is 15 s, 37.5 s, 75 s, and 150 s when the scan

intervals is 1 s, 2.5 s, 5 s, and 10 s, respectively.

Decrease

Set the interval of the low limit on rate-of-change alarm to an integer between 1 and 15.
The setup procedure is the same as Increase.

Hysteress

Sets the alarm hysteresis of the measurement channels.
The hysteresis width can be set in the range of 0.0% (Off) to 1.0% of the recording span
in 0.1 steps.
The hysteresis applies to all high limit and low limit alarms of measurement channels.

Math hysteress (Models wth the Computaton Functon (/M1 Opton))

Sets the alarm hysteresis of the computation channels.
The hysteresis width can be set in the range of 0.0% (Off) to 1.0% of the recording span
in 0.1 steps.
The hysteresis applies to all high limit and low limit alarms of computation channels.

7.1 Changng the Auxlary Alarm Functon