1 4
MA01/1
Datum 16.11.2001
Art.Nr. 77320
Z.Nr. 8664054
Änd.Stand 389/01
Reference / offset value modification (for 1-
channel version only)
• Press the two keys
+
simultaneously to
enter a reference value.
• Press the two keys
+
simultaneously
to enter an offset value.
• The display then shows the reference / offset
value, which can be changed via the two arrow
keys.
• Press key
to store the new reference /
offset value; the display reverts to the original
mode.
• If not key has been pressed for approx. 30 s,
MA01/1 will revert to the original mode, automa-
tically storing the reference/offset value.
10. Display mode
Both types of MA01/1 show in the display the
measuring value captured by the sensor. The 2-
channel execution has two LEDs which indicate
whether the displayed value refers to sensor 1 or
sensor 2. Use key
for switching between the
inputs.
Fig. 9: Sensor LEDs of 2-channel MA01/1
11. Last value memory
Precondition:
'_rSTo'_ = "on"
• MA01/1 with voltage supply10 - 30 V DC and
230 VAC: last value memory functions when
mains supply is cut off or when key ON/OFF is
pressed.
• MA01/1 with 4.5-10 VDC supply (external
battery module power supply): last value memo-
ry functions when key ON/OFF is pressed.
Attention ! Before disrupting power supply press
key "ON/OFF" to switch off the display and to
guarantee a correct function of the last value
memory !
12. Referencing
During referencing the counter is set to the
programmed reference value and this value is
displayed. MA01/1 can thus be ‘zeroed’, if the
reference value was previously programmed to
0.
For referencing (or zeroing)
• press key
.
• for 1-channel MA01/1:
Briefly activate input REF (contact against GND,
eg. by a switch or push button with closing
function)
MA01/1 always has to be calibrated:
• before the first use of the measuring system.
• when the last value memory '_rSTo_' was
programmed to "oFF" .
• in case of sensor movement during power
failure.
• when MA01/1 asks for referencing (-> blinking
display).
Attention ! The various functions are only pos-
sible if they were released or switched on before
in programming mode.
13. Trouble shooting
Error states are recognized and shown in the
display:
Message: full
Description: display overrun
Action: check parameters and adjust them if
necessary; set display to reference value
Message: MA01/1 stops during display test,
operation via keyboard impossible.
Description: no sensor signal available when
display was switched on
Action: check sensor position;
switch MA01/1 off and on again
Message: display blinking.
Description: missing referencing.
Action: set display to reference value
Message: display blinking
Description: faulty / no sensor signal
Action: check gap between sensor and magne-
tic strip
Message: display blinking.
Description: accumulator/battery voltage < 4,5 V
Action: remaining operating time = approx. 30
minutes; exchange accumulator/battery
ON
OFF
Sensor 2
Sensor 1
