Relay Parameters - Accusonic 8510+ series Reference Manual

7-8 Accusonic Model 8510+ Series Flowmeter
MAN OUTPUT VALUE
HOLD ON ERROR 0 / 1
4/0 mA Error
4mA FINE ADJUST
20mA FINE ADJUST

Relay Parameters

There are 16 separate lists, one for each relay. These describe the function, section allocation and behavior
of each individual relay, if supplied.
ASSIGN A SECTION
TYPE (1 : 10) 0 = OFF
THRESHOLD
DELAY
entered fixed value.
Normally only used during commissioning.
To select the chosen Variable, (Flow, Level, Temperature etc.)set to 0
To select the manually entered MAN OUTPUT VALUE: set to 1
The manual figure, in the scaled units used by the flowmeter.
Set to 0 to cause the output to go to 4mA in the event of failure.
Set to 1 to cause the output to hold the last good value in the event of failure.
Set the 8510 to 4mA or 0mA on error.
Adjust the 4mA Output (every 25 counts will change the output by 0.01mA).
Adjust the 20mA Output (every 25 counts will change the output by 0.01mA).
Defines which section the relay responds to.
For "sum of section" functions, set to 0.
Defines the function of the relay.
When a selection has been made, a code giving an indication of the function appears
on the screen.
Value Display Code
Set to 0 **OFF**
Set to 1 SEC Q MX 1
Set to 2 SEC L MX 1
Set to 3 PATH SUB
Set to 4 SECT FAIL
Set to 5 SECT VOL
Set to 6 SUM Q MX 1
Set to 7 SUM VOL
The value of the variable (flow or level), above which the relay will eventually
operate.
Range –99999 to +999999
The number of consecutive measurement cycles for which the variable exceeds or
falls below the threshold, before the relay operates.
When used for Section Fail or Path Substitution alarms, the relay operation is
delayed by a number of measurement cycles, after the onset of the alarm state.
If an alarm state ceases, the relay returns to its normal state immediately. Range 1
to 999 measurement cycles.
Function
if the relay is not used.
for the relay to operate when the section flow
exceeds the threshold value in this relay's list.
for the relay to operate when the section level
exceeds the threshold value in this relay's list.
for the relay to operate when Path
Substitution is in operation in the section.
(Pipe mode only).
for the relay to operate when the section fails.
for the relay to transmit section totalizer
pulses. Note Only one relay may be allocated
to each section for this function.
for the relay to operate when the sum of
section flows exceeds the threshold value in
this list.
For the relay to transmit totalizer pulses for
the sum of the sections.