8.1 "Fault" status display
In the inactive state of the control module delta
®
, no error
messages or warning messages are transferred to the delta
delta
®
solenoid metering pump.
The symbol
will be displayed in the status display. Then the
respective error symbol flashes in the main display. If several
errors occur simultaneously, these will be displayed one after
another.
Photo Error Description
Control
module
In the control module delta
®
, an error has been detected
n EEProm error
n Data error
n When in the field
„Status display“
the symbol
is displayed addi‐
tionally then an error has been detected when calibrating the Redox
sensor (deviating from the buffer value >+/- 40 mV)
i < 4 mA Control
module
A value less than 4. mA has been measured at the voltage input
i > 20 mA Control
module
A value greater than 20. mA has been measured at the voltage input
20 mA! Control
module
The 20 mA interface has been put in an error state.
n Short circuit
n Overcurrent (> approx. 50 mA)
n Counter voltage (< 0 V)
Control
module
missing
Option module is missing or communication with the option module
cannot be established
If the option module "Control module" has been switched into the active
state, then the delta
®
solenoid metering pump expects the login of the
control module delta
®
. If no login takes place then this symbol will be
displayed
8.2
Error control module delta
®
Error Description
Hardware error A hardware error has been detected
n Access error to EEProm
n Overcurrent / undercurrent sensor
n Communication error
Software / data Configuration values cannot be used, e.g. the control parameters (X
P
, T
V
, T
N
) are all
set to zero.
Troubleshooting
43
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