ero electronic MKS - mA Manuel De Service page 28

OFF = the instrument is in UNLOCK condition
When it is desired to switch from LOCK to
UNLOCK condition, set a value equal to P20
parameter.
When it is desired to switch from UNLOCK to
LOCK condition, set a value different from P20
parameter.
AL1 Alarm 1 threshold (in eng. units).
This parameter is available only if P 9 is equal
to "AL1.P", "AL1.b" or "AL1.d".
Ranges:
- Span limits for process alarm.
- From 0 to 500 units for band alarm.
- From -500 to 500 units for deviation alarm.
HSA1 Alarm 1 hysteresis
This parameter is available only if P 9 is equal
to "AL1.P", "AL1.b" or "AL1.d".
Range:From 0.1% to 10.0% of the input span
or 1 LSD
AL2 Alarm 2 threshold (in eng. units).
For other details see AL1parameter.
HSA2 Alarm 2 hysteresis
For other details see HSA1parameter.
AL3 Alarm 3 threshold (in eng. units).
For other details see AL1parameter.
HSA3 Alarm 3 hysteresis
For other details see HSA1parameter.
Pb Proportional band
Range: from 1.0% to 200.0% of the input span.
When Pb parameter is set to zero, the control
action becomes ON-OFF.
Note: When device is working with SMART
algorithm the Pb value will be limited by P36
and P37 parameters.
HyS Hysteresis for ON/OFF control action
Range: from 0.1% to 10.0% of the input span.
ti Integral time
This parameter is skipped if Pb=0 (ON/OFF
action).
Range: From 00.01 to 20.00 mm.ss
Above this value the display blanks and the
integral action is excluded.
Note: When the device is working with SMART
algorithm, the minimum value of the integral
time will be limited by P38 parameter.
XKS-mA-1-A0.p65 22
td Derivative time
This parameter is skipped if Pb=0 (ON/OFF
action).
Range:From 00.00 to 10.00 mm.ss.
Notes:
1)When device is working with SMART
algorithm the td value will be equal to a quarter
of Ti value.
2)When P46 is equal to "Pi", the derivative
action is always excluded.
IP Integral pre-load
This parameter is skipped if Pb=0 (ON/OFF
action).
Ranges:
- From 0.0 to 100.0 % of the output if device is
configured with one control output.
- From -100.0 to 100.0% of the output if device
is configured with two control outputs.
Cy2 Output 2 cycle time
This parameter is available only if P9 is equal to
"rEv" or "dir".
Range:From 1 to 200 s
Cy3 Output 3 cycle time
This parameter is available only if P12 is equal
to "rEv" or "dir".
Range:From 1 to 200 s
rC Relative Cooling gain.
This parameter is skipped if Pb=0 (ON/OFF
action) or device is configured with one control
output only.
Range: From 0.20 to 1.00
Note: When the device is working with SMART
algorithm and P26 is set to ON the RCG value
is limited in accordance with the selected type
of cooling media:
- from 0.85 to 1.00 when P25 = AIr
- from 0.80 to 0.90 when P25 = OIL
- from 0.30 to 0.60 when P25 = H2O
OLAP Dead band/Overlap between H/C outputs
This parameter is skipped if Pb=0 (ON/OFF
action) or device is configured with one control
output only.
A negative OLAP value shows a dead band
while a positive value shows an overlap.
Range: From -20 to 50% of the proportional
band.
GB 22
26/04/01, 16.46