Landis+Gyr ZMQ202, User Manual

Page: 14 / 88

Gyr H 71 0200 0215 f en - ZMQ202 / ZFQ202 - User Manual
14/88 Description of Unit
Broad range of applications:
Wall / projection-mounting and rack / flush-mounting with the same
printed circuit boards give more flexibility at the place of installation and
saves money on spare parts. Plug-in compatible version for replacing or
extending with ESSAILEC connectors.
2.2 Block Schematic Diagram
U1
U2
U3
N
I1
I2
I3
Control
inputs
Measuring system
Power supply
Supply monitor
Flash
memory
Microprocessor
LCD display
Optical test
output
Optical
interface
Signal
processing
Calibration
Measured
quantities
Billing
data
Load
profil
data
Time switch
Display buttons
Calendar clock
Alarm reset
Alarm
output
Communication
unit with
interfaces
Additional
power supply
Local
RS485 interface
U
S
U
S
A/D
Filter
A/D Filter
E1
E2
E3
Syn
Transmitting
contacts
board
4 change-
over or
8 normally
open
contacts
Tariff
control
Standard
functions
Optional
functions
Control
signals
Digital
data
The main inputs to the meter are:
•
Phase voltages U1, U2, U3 and neutral conductor N
-
to be processed in the measuring system
-
for the three-phase power supply of the meter
-
to be monitored by the voltage monitor
• Phase currents I1, I2, I3
-
to be processed in the measuring system
-
to be monitored by the current monitor
• Control inputs used for:
-
selecting of energy tariffs (3 control inputs: E1, E2, E3)
-
synchronising the internal calendar clock (1 control input: Syn)
Inputs