Control Of Display Via Optical Interface; Reset Key - Landis+Gyr E650 Series User Manual

Operation
5.2.2

Control of Display via Optical Interface

5.2.3

Reset Key

D000030110 d – E650 Series 3 (ZMD400AT/CT, ZFD400AT/CT) – User Manual
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Cl. 1
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Three-phase four-wire meter
ZMD410CT44.4207 S3
3 x 230/400 V 5(10) A
T1 T2 T3
Fig. 5.2 Display keys
By pressing the lower display key "down", the display changes to the next
value in the list. By pressing the upper display key "up", the display
changes to the previous value (see also section 5.4.2 "Display Menu").
All E650 meters have an "optical key" in addition to the "up" and "down"
display keys. The optical interface serves to receive a light signal, e.g.
generated by a torch (LED torches cannot be used for this). The light signal
acts like the "down" display key and controls the display in one direction
from one value to the next. This type of display control only functions when
voltage is supplied to the meter.
The reader can also control the display at a distance from the meter de-
pending on the light intensity from the source, e.g. through a protective
glass disc in front of the meter.
The reset key is situated to the right of the battery compartment behind the
front door. To permit operation of the reset key the front door must be
opened and therefore the utility seal removed.
The reset key is normally used to perform a manual reset. If the display
check is displayed (after operation of a display key), however, pressing of
the reset key produces the service menu (see also section 5.4.3 "Service
Menu").
Fig. 5.3 Reset key behind front door
Landis+Gyr Dialog
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10000 Cl. 1
kWh
Nr. XX XXX XXX
50 Hz
20XX
SET Test
Readout
Display key
"up"
Display key
"down"
© Landis+Gyr AG
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