18
80290C_MHW_2400_0908_ENG
General Notes on Operation
• When switched on, the controller runs a self-diagnostics test.
During the test, all segments of the display and the 7 lighted indicators flash.
• If self-diagnostics detects no errors, the controller enters normal operating state
(Level 1).
• Any errors detected by self-diagnostics are stored in a register and can be
displayed with the
ERR
function on the
INF
menu.
PV displays the Process Variable value.
• Push briefly to see, in sequence, on the display (and change if
necessary) the significant values that influence operation of the controller at
Level 1 (Alarm Setpoint)
• When the button remains pushed for 3 seconds, you enter the
Programming/Configuration menu – see Navigating the Controller Menus for
details.
• Push to the Setpoint value until reaching the required value.
• Switching between net and gross values from keyboard and from digital inputs.
Display of gross value is indicated by the flashing decimal point of the ones.
In case of errors during normal operation PV Displays error code.
LO
Process Variable < min. scale limit (parameter
LOS
on
INP
menu
of selected Process Variable)
KI
Process Variable < max. scale limit (parameter
K'S
on
INP
menu
of selected Process Variable)
SBR
probe broken or input values exceed maximum limits
ERR
PT100 in short circuit and input values below minimum limits
(ex. for CT with wrong connection)
4...20mA transmitter broken or not powered
EbR
absence of probe power supply (strain-gauge) due to broken or
unconnected probe
Ebr.Lo
no voltage in probe power supply
Er.rtd
third wire for PT100 broken or not connected
E.(AL.
x calibration error on input x (x = 1...4)
To solve the problem, see: Guide to the Solution of Problems in Section 6 Maintenance.
Switching on and operating the controller
Self-diagnostics
Normal operation
Level 1
PV
PV
8 8 8 8 8
Errors during operation
PV
PV
PV
PV
PV
Lo
Xi
Sbr
Err
Ebr
PV
Ebr.Lo
PV
Er.rtd
PV
E.(AL.1