aterm TENZ 2174T Mode D'emploi page 11

TENZ2174T
displayed value is retained on the display and the output relays
will also remain in the last status. The other input (+In2 and –In2
terminals) is intended for setting the zero measured values. By
supplying impulse to this input, the current measured value is
assigned to the zero value and zero is displayed on the display for
this value.
All constants and parameters are stored in the EEPROM
memory that retains the data even if power supply is turned off.
3. Operation of the tensometric comparator
After turning power supply on, "2174T" is displayed on the
display which specifies the type number of the device. If an error
of parameter reading from the EEPROM memory is detected
during device initialization, "EEPr" will be displayed for a short
period. In such case, it is advisable to verify the parameter values.
Then the device is converted in the standard measuring mode. A
current measured value is displayed on the display. The
parameter zero value is used from the last setting of zero value. If
automatic setting of the zero value is required upon device turning
on, it is necessary to interconnect the TR bridge with the neutral
wire on a printed-circuit board.
Four pushbuttons marked with "Menu" , "Set" and down and
up arrows are intended for monitoring and setting parameters.
The principle of control follows the rules listed below:
Access in the parameter menu – "Menu" or "Set" pushbutton
j)
depressing for the period exceeding 10 s
k) Parameter
depressing
Access to parameter value – "Set" pushbutton short
l)
depressing
m) Unit positive value change – "Up arrow" pushbutton short
depressing
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Operating Instructions
– "Menu" pushbutton short