CARLO GAVAZZIA EM112 Energy Analyzer Installation Guide
- June 1, 2024
- CARLO GAVAZZIA
Table of Contents
CARLO GAVAZZIA EM112 Energy Analyzer
The analyzer measures active and reactive energy, summing (easy connection mode on) or separating imported energy from exported energy. It manages two energy tariffs using a digital input or Modbus command. It can be equipped with an optional output to communicate measurements: pulse output, RS485 Modbus port or M-Bus port. It measures two DIN modules, with a backlit LCD with sensitive touchscreen areas for page scrolling and parameters setting.
Features
Electrical specifications
NOTE
thanks to the supercapacitor function, the analyzer displays the page readings
set in HoME (selectable only in X versions) even if not powered. The function
automatically turns on when power is off but requires a minimum one-hour
charge time for up to 48-hour autonomy.
Environmental specifications
For MID meters (PF option only)
The meter is intended to be installed in a Mechanical Environment ‘M2’ as per
the MID Directive. M2 class applies to instruments used in locations with
significant or high levels of vibration and shock, e.g. transmitted from
machines and passing vehicles in the vicinity or adjacent to heavy machines,
conveyor belts, etc. The meter is intended to be installed in the
Electromagnetic Environment ‘E2’, as per the MID Directive. Class E2 applies
to instruments used in locations with electromagnetic disturbances
corresponding to those likely to be found in other industrial buildings.
For UL meters (AV1 option only)
The energy meter should be connected to the mains through an external circuit
breaker with an overload protection rated current not exceeding 100A. UL
certified where relevant. Mounting: only Din-rail mounting inside a proper
box. Measurement Category (IEC
61010-2-30): CAT III. The equipment may be impaired if the instructions
reported in this manual are not followed. Use min 80°C wire for terminals
3,4,5,6,7,8. Use a min 114°C wire for terminals 1,2, and N.
Output specifications
NOTE
for further details, see the relevant protocol available on our website. To
set output parameters, see the Parameters menu (Fig. 15).
LED specifications
General Features
Cleaning
Use a slightly dampened cloth to clean the instrument display; do not use
abrasives or solvents.
SERVICE AND WARRANTY
In the event of a malfunction, or fault or for information on the warranty,
contact the CARLO GAVAZZI branch or distributor in your country.
GENERAL WARNINGS
DANGER: Live parts. Heart attack, burns and other injuries. Disconnect
the power supply and load before installing the analyzer. Protect terminals
with covers. The energy analyzer should only be installed by
qualified/authorized personnel. These instructions are an integral part of the
product. They should be consulted for all situations tied to installation and
use. They should be kept within easy reach of operators, in a clean place and
in good condition.
Important connection note
Before connecting any input/output wire, the protection cover (Fig.1, F) must
be correctly installed. The metallic part of the wire or ferrule must be
completely inserted into the terminal.
Code key (analyzer side) EM112-DIN
Note: only the AV1 option is UL-certified
Product (Fig. 1)
Area Description
- A Current and communication connection terminals.
- B Backlit LCD with sensitive touch screen areas.
- C Model, feature summary and serial number.
- D LED:
- blinking red: 1 pulse = 1 Wh
- orange on current connected in opposite directions. Control only runs if the imported and exported energies are measured separately
- (Measure = b). E Sealing terminal caps (in a separate package). F Terminal protection cover (in a separate package)
In case you want to mount the sealing terminal caps (Fig.1 E) remember to lock them with the appropriate cable sealing.
Display (Fig. 2)
Area Description
- A Unit of measure area
- B Specific section information area
- C Signal area: version S1 only. Modbus command correctly received. version S1 only.
- Modbus command correctly sent to the master.
- D Command area
Connection diagrams
Diagram Description
- Fig. 3 Single-phase system 315 mA fuse (F), if required by local law.
- Fig. 3a Single-phase system
- Fig. 4 Digital input. Open contact = tariff 1, closed contact = tariff 2.
- Fig. 5 Pulse output (two possible connections)
Vdc: external voltage (direct current) Out: output contact (transistor
PNP open collector) GND: ground output contact (transistor PNP open collector)
Open collector outputs: the load resistance (Rc) must be designed so that the
closed contact current is under 100
mA (Von is equal to 1 V dc). DC voltage (Voff) must be less than or equal to
80 V.
Fig. 6 RS485 Modbus with Master
Note: additional instruments with RS485 are connected in parallel. The
serial output must only be terminated on the last network device connecting
terminals A- and T. For connections longer than 1000 m use a signal repeater.
Maximum 247 transceivers on the same bus.
Fig. 7 M-Bus with Master.
Note: Maximum 250 transceivers on the same bus (1 M-Bus load).
Menu map (Fig. 8)
Area Function
- A Measurement menu. Measurements are displayed by default when turned on. Pages are characterized by the reference unit of measure.
- B Parameter menu. Parameter settings pages. Require login password.
- C Information menu. The pages display information and set parameters without having to enter a password.
Operation Command
- View the next page Fig. 9
- View the previous page Fig. 10
- Open the parameter menu Fig. 11
- Exit the parameter menu Fig. 11(page End)
- Open the information menu Fig. 12
- Exit the information menu Fig. 12
Parameter settings
Operation Command
- Increase a parameter value Fig. 9
- View the next value option Fig. 9
- Decrease a parameter value Fig. 10
- View the previous value option Fig. 10
- Confirm a value Fig. 11
- Open the parameter settings page Fig. 11
- Quickly confirm the 0000 default password Fig. 12
NOTE :
After 120 s of disuse, the measurement page set in Home is displayed and the
command only works if touched twice. Upon first touch command area touch, the
display The backlight turns on.
Setting a parameter (Fig. 13)
Procedure example: how to set P int=24.
NOTE: t he first displayed value is the current one. Settings are applied
when the value is confirmed. The value is being edited if Prg appears the set
value is out of range if Err appears. After 120 s of disuse on a value being
set, the title page is displayed (P int in the figure) and Prg disappears.
After another 120 s, the measurement page set in HoME returns.
Measurement menu (Fig. 14)
NOTE: only displayed if the full display mode is set (Mode = Full).
- Reactive power Page Description
- Total imported active energy
- Requested average power (dMd = demand) calculated for the set interval.
- The value remains the same for the entire interval. It is = 0 during the first start-up interval.
- Maximum requested power (P = Peak demand) reached since last reset 09
- Active energy imported with tariff 1 (t1).
- Displayed if tariff management is on (Tariff = on).
- Active power 10 Total active energy imported with tariff 2 (t2).
- Displayed if tariff management is on (Tariff = on).
- Active power
NOTE
If the easy connection is on (Measure = A), it indicates total energy without
considering the direction.
NOTE
displays whether imported and exported energy is measured separately (Measure
= b).
Measurement faults
- If the measured signal exceeds the admitted analyzer limits, a specific message appears:
- EEE blinking: the measured value is out of limits
- EEE on the measurement depends on a value that is out of limits
- NOTE: active and reactive energy measurements are displayed but do not change.
Parameter menu (Fig. 15)
Information menu (Fig. 16)
CARLO GAVAZZI Controls SpA
via Safforze, 8 – 32100 Belluno (BL) Italy
www.gavazziautomation.com
info@gavazzi-automation.com
info: +39 0437 355811 / fax: +39 0437 355880