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Introduction to setting and configuration procedures
Programming is performed in 3 phases:
0) Setting
1/2) Configuration
These phases are accessed with the F key.
Phase 0 / Setting
In normal operation, press key F for 5 sec. to set the following
parameters:
_Pb_ / Proportional band in range 0.0...99.9% F S.
If the control is ON/OFF (integral, derivative, and cycle time
null), the set value defines hysteresis -199...+999 (1000)
-19.9...+99.9 (1000 scale with decimal point) -999...+1999
(1001-1101) -99.9...+199.9 (1001-1101 scale with decimal
point).
_rSt _/: Manual reset in range -199...+999 (1000) -19.9...+99.9
(1000 scale with decimal point) -999...+1999 (1001-1101)
-99.9...+199.9 (1001-1101 scale with decimal point).
When the control has settled, bring the value of the controlled
quantity exactly to the setpoint (at times this is necessary in PD
control).
_Ct/: Cycle time in range -2...200. By setting Ct=0, the cycle
time is excluded and the control becomes ON/OFF (in this
case, Pb becomes hysteresis in scale points). By setting Ct =
-1, you get fast PWM output with cycle time (duty cycle) fixed at
100 milliseconds, usable only with output D2 or with continuous
output 0...10V or 0...20mA. Set Ct = -2 for continuous output
2...10V or 4...20mA. Values Ct = 1 a 200 are considered as
cycle time in seconds.
P.St/: Reset power in range 0 -100%. Reset action equals free
positioning of the Proportional band. By setting 0 the P B. is
below the setpoint; by setting 100 the P.B. is completely above
the setpoint (with main output in direct function). In case of ON/
OFF control, the reset power set has no effect.
S.tu/: Insertion of Self and Auto-tuning function (see table).
S.tu
SELF
0
NO
1
NO
2
YES
3
YES
4
NO
5
NO
+8 o disable the software filter on the controlled variable
(recommended for linear scales)
Automatic turn-off of self-tuning at end of calculation
_Lb.t/ Wait time for tripping of LBA alarm (1 ..240 min); by
setting 0, the LBA function is deactivated.
_Lb.P/ Power supplied when LBA alarm is active, settable in
range 0...100%.
When setting is complete, press the F key to return to normal
operation.
Configuration Phase 1 (CFG1)
To access phase 1, press the F key until the message CFG1
appears on the display.
_It/: Integral time in range 0.0...99.9 min (by setting 0.0, the
integral action is excluded). A high integral time generates a
weak integral action, while a short integral time generates a
strong integral action
_dt/ Derivative time in range 0.00...9.99 mln (1000) 0.00...19.99
min (1001-1101) (by setting 0.00 the derivative action is
excluded).
The effectiveness of the derivative action increases
proportionately with the derivative time.
6
7 • PROGRAMMING
AUTO
SOFT-START
NO
NO
YES
NO
NO
NO
YES
NO
NO
YES
YES
YES
SOF/: Soft-start time in range 0.0...99.9 min (by setting 0.0 the
the Soft-start action is excluded).
The Soft-start action concludes at the set time or with the
controlled variable in Proportional band.
Hy1/: Hysteresis or Proportional band (PD) for AL1 in range
-199 +999 digit (1000) -19.9...+99.9 (1000 scale with decimal
point) -999...+1999 (1001-1101) -99.9...+199.9 (1001-1101
scale with decimal point). A negative (or positive) number
indicates a hysteresis band positioned below (or above) the
alarm limit, and is characteristic of a direct (or reverse) alarm.
Hy2/: Hysteresis for AL2 in range -199.. +999 digit (1000) -19.9..
+99.9 (1000 scale with decimal point) -999...+1999 (1001 1101)
-99.9...+199.9 (1001-1101 scale with decimal point).
Hy3/ Hysteresis for AL3 in range -199...+999 digit (1000)
-19.9...+99.9 (1000 scale with decimal point) -999...+1999 (1001-
1101) -99.9...+199.9 (1001-1101 scale with decimal point).
Hb.s is selectable only on instruments equipped with input
from current transformer (CT). Full scale current setting from
0...199.9 (99.9).
no /Instrument code connection in serial line in range
0...999; appears only for instruments equipped with serial
communication (version 1 H), with specific setting of "brd" code
(see CFG2).
bAU/ Baud rate for serial communication as per the table:
0
1200 baud
1
2400 baud
2
4800 baud
3
9600 baud
Available only for instruments fit with a serial card, with specific
setting of "brd" code (see CFG.2).
N.B.: for information on the serial protocol, see the manual
entitled "Introduction to serial communication".
FA.P/ "Fault action" power in range 0-100%. Supplied to main
output in case of broken input probe (Sbr or Err signal on
display)
Configuration Phase 2 (CFG2)
Access to phase CFG2 is conditioned by the closing of jumper
S9 on the CPU board on components side (see Hardware
Configuration).
Pro/: Software protection level in range 0-31 as per the table.
Pro
Setpoint
Alarms
0
DISPLAY <> DISPLAY <> DISPLAY <> DISPLAY <> DISPLAY <>
1
DISPLAY <> DISPLAY <> DISPLAY <> DISPLAY <>
2
DISPLAY <> DISPLAY <> DISPLAY <> DISPLAY
3
DISPLAY <> DISPLAY <> DISPLAY <>
4
DISPLAY <> DISPLAY <> DISPLAY
5
DISPLAY <> DISPLAY <>
6
DISPLAY <> DISPLAY
7
DISPLAY
DISPLAY
DISPLAY = DISPLAY
+8 to disable the ON-OFF function from the panel keys
+16 to inhibit the AUTO/MAN function (only for instruments with
AUTO/MAN function): only power display in Automatic remains
displayed.
CL, 485
CL, 485
485
485
Phase 0
It, dt
CFG1
<> = SETTING
80343I_MHW_1000_07-2011_ENG
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