ZENNER MULTIDATA WR3 User Manual
EnergyMetering
multidata
Installation and operating manual
Electronic energy calculator for heat meters
with 2 inputs/outputs
optionally with M-Bus, RS-232 and RS-485
All that counts.
General information
With multidata you have acquired one of the
most up-to-date, modern heat calculators cur-
rently available on the market.
Expressive symbols in the display and easy
menu navigation make readout simple. It can be
operated with one single button. The setting of
the data loggers (depending on the type of de-
vice) is being done via the software GMM.
The calculator is equipped with a long-life battery
made for operation during the initial verication
validity period (5 years) including a reserve of at
least another year. With a second battery you will
reach 11 years.
Initial verification
multidata is produced and tested in compliance
with the new European measuring instruments
directive (MID). According to this directive, de-
vices do no longer carry an initial verication
stamp, but rather the year of the device’s decla-
ration of conformity (recognizable on the front of
the device, for example: M09). The MID controls
the use of heat meters up to the moment they
are placed on the market resp. their rst putting
into use. After this, the national regulations for
devices subject to legal verication apply within
the EU.
Technical data multidata
Temperature range
Temperaturdifferenz k 3 - 120
Display Multifunctional LCD, 8-digit, oating
Display unit
Interface ow sensor
Temperature sensor connection
Max. cable length 2-wire
Max. cable length 4-wire
Interfaces
Ambient temperature
Power supply
Battery lifetime
Protection class IP 54 / IP 65, acc. to DIN 40050
Mechanical/electro-magnetic class
Accuracy class according to EN1434
Measuring cycle dynamic
°C 1 - 150
MWh, kWh, GJ, MJ
Models with contact pulsers or active pulser
(no Namur or Opto),
passive max. 1Hz / active max. 100 Hz
PT500, optional PT100, PT1000
12,5 m (PT500), 2,5 m (PT100), 20 m (PT1000)
20 m
optical, optionally ZR-Bus (RS-485), M-Bus, RS-232,
remote readout outputs
°C 5 - 55
Battery 3.6 V Lithium,
optionally mains power supply 230V/24V
6 years, optionally 11 years
M1/E1
40s/30s/10s
2
11
10
GND
pulse
11
10
pulse
11
10
VCC 2,5 … 3,6 V
Uhigh = 2,5 … 3,6 V
Ulow = 0 … 0,3 V
11
10
52/
54
11
10
GND
pulse
11
10
pulse
11
10
VCC 2,5 … 3,6 V
53/
55
Uhigh = 2,5 … 3,6 V
Ulow = 0 … 0,3 V
11
10
pulse
11
10
pulse
GND
pulse
pulse
VCC 2,5 … 3,6 V
pulse
52/
54
11
10
GND
pulse
11
10
pulse
11
10
VCC 2,5 … 3,6 V
tp
tp
53/
55
52/
54
53/
55
Uhigh = 2,5 … 3,6 V
Ulow = 0 … 0,3 V
pulse
52/
54
11
10
GND
pulse
11
10
pulse
11
10
VCC 2,5 … 3,6 V
U = 3 … 30 V
Imax = 20 mA
tp
tp
53/
55
52/
54
53/
55
52/
54
Uhigh = 2,5 … 3,6 V
Ulow = 0 … 0,3 V
The duration of initial verication validity in Germany
remains 5 years for heat meters. After this period has
expired, the measuring device may no longer be used
for billing in commercial use. The regulations resp.
validity period may vary in other countries of the EU.
Technical data flow sensor input
Flow sensor input
Electrical connection Schematic diagram Connection data
Passive with
10
mechanical
contact (Reed)
Passive with
open drain FET
Active f.ex. with
C-MOS Gate
Technical data additional inputs
Electrical connection Schematic diagram Connection data
Passive with
mechanical
contact (Reed)
Passive with
open drain FET
Connection data outputs
Ext. Voltage 3V … 30 V DC
Max. current 20 mA
Output frequency 1 Hz (8 Hz dynamically switching, if output
with 1 Hz is not possible)
Switching times: 1 Hz: 400ms < tp < 600 ms
8 Hz: 50ms < tp < 80 ms
11
10
11
10
Uhigh = 2,5 … 3,6 V
Ulow = 0 … 0,3 V
11
52/
54
53/
55
52/
54
53/
55
3
Electro-magnetic interference
multidata fulls the national and international
requirements for interference resistance. To
avoid malfunctions due to other interferences,
do not install uorescent lamps, switch cabinets
1 Hz Version: fmax = 1 Hz, Pulse-duty factor 1:1 to 1:9 Input
capacitance: approx. 10 nF, Input resistance approx 850 kOhm
100 Hz Version: not allowed
1 Hz Version: fmax = 1 Hz, Pulse-duty factor 1:1 to 1:9 Input
pulse
VCC 2,5 … 3,6 V
pulse
tp
tp
capacitance: approx. 10 nF, Input resistance approx 850 kOhm
100 Hz Version: fmax = 30 Hz, Pulse-duty factor 1:1, Input
capacitance: approx. 2,5 nF, Input resistance approx. 850 kOhm
1 Hz Version: fmax = 1 Hz, Pulse-duty factor 1:1 to 1:9
Uhigh = 2,5 … 3,6V, Ulow = 0 … 0,3 V, Input capacitance:
pulse
approx. 10 nF, Input resistance approx 850 kOhm
100 Hz Version: fmax = 100 Hz, Pulse-duty factor 1:1
Uhigh = 2,5 … 3,6V, Ulow = 0 … 0,3 V, Input capacitance:
GND
approx. 2,5 nF, Input resistance approx. 850 kOhm
fmax = 1 Hz,
Pulse-duty factor 1:1 to 1:9
Input capacitance: approx. 15 nF,
Input resistance approx 470 kOhm
fmax = 1 Hz,
Pulse-duty factor 1:1 to 1:9
Input capacitance: approx. 15 nF,
Input resistance approx 470 kOhm
Typical connection
52/
54
53/
55
U = 3 … 30 V
Imax = 20 mA
GND
Connector pin assignment
or electric devices such as motors or pumps in
the immediate vicinity of the meter (minimum
distance 1 m). Cables leaving the meter should
not be laid parallel to live cables (230V, minimum
distance 0.2 m).
Declaration of Conformity
ZENNER International GmbH & Co. KG declares
that this product with the number of the EC type-
examination certicate DE-08-MI004-PTB012
complies with the requirements of the EC direc-
tives 2004/22/EC (Measuring instruments direc-
tive) and 89/336/ EEC (electro-magnetic compa-
tibility).
The most up-to-date information about this pro-
duct and of our installation notice can be found at
www.zenner.com
Temperature sensors
2-wire measurement
Supply 1 - 2
Return 3 - 4
4-wire measurement (optionally)
Supply 1 - 2 / 5 - 6
Return 3 - 4 / 7 - 8
Flow sensor
Flow sensor pulse 10
GND 11
Input/Output
I/O 1 pulse 52
GND 53
I/O 2 pulse 54
GND 55
Depending on the meter’s mo-
del the version of the connec-
tion board can differ.
M-Bus
M-Bus L1 24
L2 25
RS-232
DTR 71
GND 72
Tx 73
Rx 74
RS-485
+UB 71
GND 72
A 73
B 74
24
Switch Connection 2-wire Connection 4-wire
4
1 2 3 4 10 11 9 50 51 52 53 54 55 71 72 73 74
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