Gewiss GHORUS GWA9801 User manual

KNX single-phase energy meter
with direct connection
GWA9801
Technical Manual

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Contents
1Introduction ................................................................................................................................................ 4
2Application.................................................................................................................................................. 4
2.1 Association limits................................................................................................................... 4
3"Information” menu..................................................................................................................................... 5
4“Energy meter settings” menu.................................................................................................................... 6
4.1 Parameters............................................................................................................................ 6
4.1.1 Delay time from power on and first transmission .................................................................. 6
5“Electric measures” menu.......................................................................................................................... 8
5.1 Parameters............................................................................................................................ 9
5.1.1 Electric measures sending at bus restoring .......................................................................... 9
5.1.2 Reset consumed and produced energy primary counters from local menu ......................... 9
5.1.3 Consumed active energy counter.......................................................................................... 9
5.1.4 Consumed energy counter format....................................................................................... 10
5.1.5 Consumed energy primary counter init value...................................................................... 10
5.1.6 Consumed energy primary counter sending condition........................................................ 11
5.1.7 Consumed energy primary counter variation for sending ................................................... 11
5.1.8 Consumed energy primary counter sending period (minutes)............................................ 11
5.1.9 Reinitialize consumed energy counters .............................................................................. 11
5.1.10 Consumed energy differential counter overflow value ........................................................ 12
5.1.11 Consumed energy differential counter sending condition................................................... 12
5.1.12 Consumed energy differential counter variation for sending............................................... 12
5.1.13 Consumed energy differential counter sending period (minutes) ....................................... 13
5.1.14 Start/stop consumed energy differential counter from bus ................................................. 13
5.1.15 Produced active energy counter.......................................................................................... 13
5.1.16 Produced energy counter format......................................................................................... 14
5.1.17 Produced energy primary counter init value........................................................................ 14
5.1.18 Produced energy primary counter sending condition.......................................................... 14
5.1.19 Produced primary counter energy variation for sending ..................................................... 15
5.1.20 Produced energy primary counter sending period (minutes).............................................. 15
5.1.21 Reinitialize produced energy counters................................................................................ 15
5.1.22 Produced energy differential counter overflow value .......................................................... 15
5.1.23 Produced energy differential counter sending condition..................................................... 16
5.1.24 Produced energy differential counter variation for sending................................................. 16
5.1.25 Produced energy differential counter sending period (minutes) ......................................... 16
5.1.26 Start/stop produced energy differential counter from bus................................................... 17
5.1.27 Transmission of the power values....................................................................................... 17
5.1.28 Power variation for sending................................................................................................. 17
5.1.29 Transmission of the power values....................................................................................... 18
5.1.30 Power factor variation for sending....................................................................................... 18
5.1.31 Voltage RMS value sending................................................................................................ 18
5.1.32 Voltage RMS variation for sending...................................................................................... 18
5.1.33 Current RMS value sending ................................................................................................ 19
5.1.34 Current RMS variation for sending...................................................................................... 19
5.1.35 Transmission of the frequency value................................................................................... 19
5.1.36 Frequency variation for sending.......................................................................................... 19
6“Power thresholds” menu......................................................................................................................... 21
6.1 “Power thresholds menu parameters .................................................................................. 21
6.1.1 Power thresholds number to activate.................................................................................. 21
6.2 “Power thresholds X menu parameters............................................................................... 22
6.2.1 Threshold activation value................................................................................................... 22
6.2.2 Power threshold initial value (W)......................................................................................... 23
6.2.3 Power threshold hysteresis (W) .......................................................................................... 23
6.2.4 Changing threshold setting.................................................................................................. 24
6.2.5 Regulation step of threshold by bus.................................................................................... 24
6.2.6 Signalling of the overcoming power threshold .................................................................... 24
6.2.7 At overcoming power threshold........................................................................................... 25
6.2.8 At coming back under power threshold............................................................................... 25
6.2.9 Period of signalling sending (minutes) ................................................................................ 25
6.2.10 Over power threshold period counter format....................................................................... 25

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6.2.11 Overflow value..................................................................................................................... 25
6.2.12 Period counter sending condition........................................................................................ 26
6.2.13 Period counter variation for sending.................................................................................... 27
6.2.14 Counter sending period (minutes)....................................................................................... 27
6.2.15 Over power threshold number counter format .................................................................... 27
6.2.16 Overflow value..................................................................................................................... 27
6.2.17 Number counter sending condition...................................................................................... 28
6.2.18 Period counter variation for sending.................................................................................... 28
6.2.19 Counter sending period (minutes)....................................................................................... 28
6.2.20 Power threshold function at download ................................................................................ 28
6.2.21 Power threshold function at bus restoring........................................................................... 29
7Annex....................................................................................................................................................... 30
7.1 Local menu and push-buttons on the GWA9801................................................................ 30
7.2 Accessing the PROG status menu and the Firmware Version ........................................... 31
7.3 Device start-up procedure................................................................................................... 32
7.3.1 Factory reset........................................................................................................................ 32
7.3.2 Procedure for activating the physical address programming mode.................................... 33
7.4 Device malfunctioning error feedback –No BUS connection ............................................. 33
7.5 Feedback of ETS download in progress ............................................................................. 33
7.6 Feedback of application deletion by ETS............................................................................ 34
8Communication objects............................................................................................................................ 35

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1 Introduction
The device acts as a power meter.
It has a built-in meter for measuring the following electric values and sending them on the BUS: active energy
consumed and produced, active/reactive/apparent power, RMS voltage, RMS current, power frequency and
factor. Some of these values are also shown directly on the display.
Up to 20 absorption limit thresholds can be set and monitored; with the monitoring of the instantaneous power
(on the basis of power threshold values), signals can be sent when the limit thresholds are exceeded and a
count can be made for the time the measured power remains above the threshold or how often it exceeds the
limit.
The device can only be configured in “system mode” via ETS.
To make this manual easier to read, all the parameters and communication objects implemented by the device
are grouped in different paragraphs, each of which represents the relative configuration menu in the ETS
database.
2 Application
The main functions implemented in the application program are:
Measurement of the electric values active energy consumed and produced, active/reactive/apparent
power, RMS voltage, RMS current, power frequency and factor.
Setting of the primary and differential counters for active consumed and produced energy, with the
possibility to define the initial value and to reset.
Power thresholds: up to 20 absorption limit threshold levels can be set and monitored, and a signal is
sent on the BUS if these thresholds are exceeded; a count can be made for the time the measured
power remains above the threshold or how often it exceeds the limit.
2.1 Association limits
Maximum number of group addresses: 254
Maximum number of associations: 254
This means that up to 254 group addresses can be defined, and up to 254 associations can be made (between
communication objects and group addresses).

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3 "Information” menu
The Information menu reminds the user, in operating terms, how to access the PROG menu in order to
activate the programming mode of the physical or individual address of the device, and how to return from this
menu to the RUN menu (long press on the UP and DOWN push-buttons).
Fig. 3.1
For more information, refer to paragraph 7.2 “Accessing the PROG status and firmware version” in the
annex, along with the User Manual.

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4 “Energy meter settings” menu
The Energy meter settings menu contains just one parameter for configuring the transmission of telegrams
on the BUS following a BUS voltage failure and reset, to avoid a surge in messages and the risk of them
colliding.
The basic structure of the menu is as follows:
Fig. 4.1: “Energy meter settings” menu
4.1 Parameters
4.1.1 Delay time from power on and first transmission
To ensure that, with several devices in the line, the telegrams sent by the various devices do not collide when
the BUS voltage is reset, you can define a time limit after which the device can transmit the telegrams on the
BUS following a BUS voltage failure/reset. The “Delay time from power on and first transmission”
parameter is used to define this delay.
The values that can be set are:
-11..21 seconds (depends on physical address) (default value)
-5..9 seconds (depends on physical address)
-11 seconds
-13 seconds
-15 seconds
-17 seconds
-19 seconds
-21 seconds
-no delay

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If the values 11..21 seconds (depends on physical address) and 5..9 seconds (depends on physical
address) are set, the device automatically calculates the transmission delay using an algorithm that examines
the physical address of the device itself; the values indicated (11/21 or 5/9) indicate the minimum and maximum
limits of the value range that can be calculated.
Note that this parameter therefore merely sets a delay for transmitting the telegrams in the first few seconds
after the first switch-on. It does not in any way hamper the user's interaction with the graphic interface of the
device.
The delay following the reset of the 230V supply voltage - rather than just the BUS voltage - may be different
even if the same value is set, because in the first case the device must actually start up while in the second it
might already be active if the 230V supply hasn't failed.

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5 “Electric measures” menu
The Electric measures menu contains the parameters for enabling and setting the conditions for sending the
electric measurements detected for the load connected to the device. This menu is always visible. The
structure of the menu is as follows:
Fig. 5.1: “Electric measures” menu
The device has a built-in meter for measuring the following electric values: consumed active energy,
active/reactive/apparent power, RMS voltage, RMS current and power factor.
NB: the energy count is made even without the BUS voltage, as long as the device is powered.
The energy counters (energy produced and consumed) can be reset: by going to the energy counter
display page and pressing the SET push-button for at least 5 seconds until the required page appears.

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Press SET again to reset the counter, or press the arrow push-buttons (or wait for the inactivity time-
out) to annul the reset.
The following parameters are used to configure the ways of measuring and sending the various values.
5.1 Parameters
5.1.1 Electric measures sending at bus restoring
The “Electric measures sending at bus restoring” parameter determines whether the communication
objects for signalling the electric measurements (configured to be transmitted on variation) must be transmitted
on BUS voltage reset as well. The parameter can have the following values:
- disable
- enable (default value)
5.1.2 Reset consumed and produced energy primary counters from local menu
There are two different counters for the consumed and produced energy values:
Primary counter
-The energy count is always active
-The initial value can be defined (a value that might be different from 0)
-Overflow value = maximum permitted by the counter
-It can be reset (reinitialised)
Differential counter
-The energy count can be activated/stopped via a communication object (e.g. the consumption is measured
within a defined time band managed by a KNX clock)
-The initial value is always 0
-The overflow value can be set (a value that might be different from the maximum permitted by the counter)
-It can be reset (reinitialised)
The “Reset consumed and produced energy primary counters from local menu” parameter enables the
reset of the primary counters for active consumed and produced energy via the local menu too (see User
Manual).
The values that can be set are:
-disable
-enable (default value)
PARAMETERS RELATING TO “CONSUMED ACTIVE ENERGY”
5.1.3 Consumed active energy counter
The “Consumed active energy counter” parameter can be used to activate the count of the active energy
consumed and define the format of the communication object used to send the counter value.
The values that can be set are:
-disabled (default value)
-enable primary counter

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-enable primary and differential counters
If enable primary counter is selected, the “Consumed energy counter format”,“Consumed energy
primary counter init value”, “Reinitialize consumed energy counters”, and “Consumed energy primary
counter sending condition” parameters are displayed, along with the Consumed active energy primary
counter communication object.
If enable primary and differential counters is selected, not only the parameters/communication objects listed
previously (in relation to the primary counter) are displayed but also the “Consumed energy differential
counter overflow value”,“Start/stop consumed energy differential counter from bus”,and “Consumed
energy differential counter sending condition” parameters and the Consumed active energy differential
counter communication object.
5.1.4 Consumed energy counter format
The capacity of the primary and differential counters used for the energy count must be sufficient to measure
the energy in KNX coding in kWh (maximum value = 2147483647 kWh). The “Consumed energy counter
format” parameter defines the dimension and coding of the communication object used to transmit the value
of the primary and differential counters (if enabled). The values that can be set are:
-watthour (Wh) (default value)
-kilowatthour (kWh)
The value set for this item will define the format of the Consumed active energy primary counter and
Consumed active energy differential counter objects, and the values that can be set for the “Consumed
energy primary counter init value” and “Consumed energy differential counter overflow value”
parameters.
5.1.5 Consumed energy primary counter init value
The “Consumed energy primary counter init value” parameter is used to set the initial value of the primary
energy counter; when the primary counter is in overflow (i.e. it reaches its maximum value), the count is
stopped but can be reinitialised using the relative BUS command on the object.
Depending on the value set for the “Consumed energy counter format” parameter, the values that can be
set for this item will be different:
If the format is watthour (Wh), the format (Data Point Type) of the Consumed active energy primary
counter communication object is 13.010 DPT_ActiveEnergy, and the values that can be set for the
parameter are:
-from 0 (default value) to 2147483647 watthour, in steps of 1
If the format is kilowatthour (kWh), the format (Data Point Type) of the Consumed active energy
primary counter communication object is 13.013 DPT_ActiveEnergy_kWh, and the values that can be
set for the parameter are:
-from 0 (default value) to 2147483647 kilowatthour, in steps of 1
The device can use the Reset consumed active energy primary counter (Data Point Type: 1.015
DPT_Reset) communication object, the device can receive the primary counter reinitialisation commands that
bring the counter back to the value set for the “Consumed energy primary counter init value” item; a value
of “0” is ignored, whereas when the value “1” is received, the primary counter is reset at the initial value and
the Overflow consumed active energy primary counter object is set at “0”.
Via the Overflow consumed active energy primary counter (Data Point Type: 1.002 DPT_Bool) object, the
device indicates the overflow of the primary counter. When an overflow occurs, a value of “1” is sent; a value
of “0” is sent when the counter is reinitialised.