4 | VUIGI102 © Danfoss | 2018.01
Display (LCD)
The device is equipped with 8-digits LCD (Liquid Crystal Display) with special symbols to display
parameters, measurement units and operation modes.
Information:
- integral and instantaneous
- measured
- parameters
- archive data
- device configuration information
Energy units resolution:
- 00000001 kWh
- 00000.001 MWh (Gcal or GJ)
Flow volume resolution: 00000.001 m
3
Data registration and storage
Every hour, day and month values of the measured parameters are stored in memory of the meter. All
data from archive can be read only by means of the remote reading (see 5.5).
In addition data logger records of monthly parameters can be seen on the display (see 5.3.1); factory
set is display of the previous month only.
Following hourly, daily and monthly parameter values are recorded in energy meter memory:
1 Integrated heating energy
2 Integrated cooling energy
3 Integrated energy of tariff 1 *
4 Integrated energy of tariff 2 *
5 Integrated volume of liquid
6 Integrated pulse value in pulse input 1 *
7 Integrated pulse value in pulse input 2 *
8 Maximum thermal power value for heating and date
9 Maximum thermal power value for cooling and date
10 Maximum flow rate value and date
11 Maximum value of flow temperature of heat conveying liquid and date
12 Maximum value of return temperature of heat conveying liquid and date
13 Minimum value of flow temperature of heat conveying liquid and date
14 Minimum value of return temperature of heat conveying liquid and date
15 Minimum value of temperature difference and date
16 Average value of flow temperature of heat conveying liquid
17 Average value of return temperature of heat conveying liquid
18 Operating time without an error of thermal energy calculation
19 Total error code
20 Time when the flow rate exceeded 1,2q
s
21 Time when the flow rate was less than q
i
* If activated
Data logger capacity for all 21 parameters:
- hourly records up to 1480 h
- daily records up to 1130 days
- monthly records up to 36 last months
Storage time of measured integrated parameters even if device is disconnected from power supply:
- not less than 15 years
3.2 Onboard communication modules and interfaces
3.2.1 Optical interface
Integrated into the front panel of calculator. It is designed for data reading via M-bus protocol and
parameterization of the meter.
The optical interface starts work (is activated) only after pressing control button and automatically
shuts down after 5 minutes, after the last pressing any button or after completing data transmission
via interface.
3. How to operate the
heat meter (continuous)