Rate Alarm - Mitsubishi Electric R60AD8-G User Manual

Set values within the range satisfying the condition "Process alarm upper upper limit value  Process alarm
upper lower limit value  Process alarm lower upper limit value  Process alarm lower lower limit value". If a
value out of the range is set, a process alarm upper lower limit value setting range error (error code: 1BH)
occurs.

Rate alarm

This function outputs an alert when the change rate of a digital output value is equal to or greater than the rate alarm upper
limit value, or the rate is equal to or smaller than the rate alarm lower limit value.
Digital output value
Rate alarm alert
detection cycle
(1)
Change rate of the
digital output value (%)
Rate alarm upper
limit value
(CH1: Un\G524,
CH2: Un\G724)
0
Rate alarm lower
limit value
(CH1: Un\G526,
CH2: Un\G726)
'CH1 Alert output flag
OFF
(Rate alarm upper
limit)' (Un\G38, b0)
'CH2 Alert output flag
OFF
(Rate alarm lower
limit)' (Un\G39, b1)
'Alert output signal' OFF
(X8)
'CH1 Digital output value' (Un\G400)
'CH2 Digital output value' (Un\G600)
(2) (3)
The change amount of the digital output value is converted to the change
rate at every rate alarm alert detection cycle. "Change rate > 0" if the change
amount increases, and "Change rate < 0" if the change amount decreases.
Change rate of CH1 Digital output value
(1) (2) (3)
Change rate of CH2 Digital output value
ON ON
OFF
ON
OFF
ON
Controlled by the A/D converter module
Time
Ex.
For the rate alarm upper limit value: 5.0%, and
the rate alarm lower limit value: -5.0%
No. Change rate of the digital output value
CH1
An upper limit
(1) 10.0%
alert issued
for CH1
(2) 3.0% No alert
issued
An upper limit
(3) 10.0%
alert issued
for CH1
Time
: :
: :
OFF
OFF
1.6 Alert Output Function
1
CH2
-3.0% No alert
issued
A lower limit
-10.0%
alert issued
for CH2
-3.0% No alert
issued
:
:
1 FUNCTIONS
33