Yokogawa µR20000 - Manual (Page 25)

1-9
IM 04P02B01-01E
Funct
onal
Explanat
on
and
Setup
Gu
de
For the procedure to set the functions, see section 1.10, “Function Setup Guide.”
1.3 Alarms
1
2
3
4
5
6
7
8
9
10
11
12
App
Index
Alarm Indcaton
The alarm status can be displayed on the screen. For details on the display, see section
1.5.
Non-Hold/Hold Operaton of the Alarm Indcaton
The alarm indication can be set to operate in the following fashion when the alarm
condition is no longer met.
• Clear the alarm indication (non-hold).
• Hold the alarm indication until the alarm ACK operation is executed (hold).
The default setting is non-hold.
Alarm
Alarm occurrence
Alarm release
Alarm
indication
Alarm ACK Alarm ACK
or
or
Hold Non-hold
ON ON
OFF
Blinking
OFF
Blinking
OFF
<Related Topcs> Setting the non-hold/hold operation of the alarm indicator: Section 7.1
Alarm Recordng
The alarm occurrence/release can be recorded on the chart paper. See section 1.4.
Alarm Output Relay (/A1, /A2, /A3, /A4, and /A5 Optons)
Contact signals can be generated from alarm output relays when alarms occur. The
number of output relays is 2 (/A1), 4 (/A2), 6 (/A3), 12 (/A4), or 24 (/A5). The alarm output
relays are denoted as I01 to I06, I11 to I16, I21 to I26, and I31 to I36 on the recorder.
The following functions can be assigned to the alarm output relay.
Dagnoss Output
The diagnosis output can be assigned to alarm output relay I01.
The relay is activated when there is an error in the plotter operation on the pen model,
when a burnout is detected, or when there is an error in the A/D converter. Output relay
I01 is normally energized and de-energizes when an error is detected (de-energized
operation and non-hold operation).
NO C NC
Normal
NO C NC
Malfunction
NO C NC
Power-OFF
NO: Normally Opened, C: Common, NC: Normally Closed
Note
If diagnosis output is enabled, I01 becomes a relay dedicated to diagnosis output.
<Related Topcs> Setting the diagnosis output: Section 7.1