9
GB
GENERAL OPERATION
03.12.08
84.00.00
Appears only for about 3 seconds when the instrument is switched on.
Provides information on the instrument’s firmware and operating details.
When this page is displayed, the LEDs flash quickly to indicate they are working properly.
PowerOn
Ready
Black-out page
For this to appear, it has to be configured as the default page. Appears only when the instrument is switched on.
It disappears as soon as the display is moved. It reappears after the settings are configured using the keypad.
Phase-to-phase voltages
RAEM4CS
485: 001
INFO page. Indicates the instrument model and version. The lit-up square (first line on the right) indicates the
voltage phases are OUT OF SEQUENCE. The square does not appear when the sequence is correct. Only in the
case of the “485” models does the last value at the bottom on the right indicate the node number of the instrument
on the MODBUS network.
V12 V23
V31
400 400
400
The measurement and indication pages that can be accessed by pressing and QUICKLY releasing the RIGHT-HAND button are as follows:
Value of each phase-to-phase voltage (V)
Phase-to-neutral voltages
V1 V2
V3
231 231
231
Value of each phase-to-neutral voltage (V)
Currents of Lines 1 and 2
A1
A2
A1=100.0
A2=100.0
Value of A1 and A2 (A)
The values have decimal points if the selected CT is less than 1000A (/5), otherwise they
are whole.
Current of Line 3 / Current in neutral
A3
An
A3=100.0
An=200.0
Value of A3 and Neutral Current (A)
The values have decimal points if the selected CT is less than 1000A (/5), otherwise they
are whole.
Frequency
Hz Hz
50.00
Frequency (Hz)
This is measured by V1.
Power factor
Pf tot Pf tot
-1.00
Three-phase power factor (Cosφ)
The value is the same as the active line power.
The offset is void without the indicators “C” (capacitive) or “I” (inductive).
Total active power
W
Total active power (W)
The measurement is POSITIVE for consumed power, NEGATIVE for power produced.
W
46170
PRESSED BUTTON WHEN RELEASED DESCRIPTION
The instrument calculates and monitors the electrical measurements of the plant to which it is connected. It displays the information on one
of the pages on the display, selected by quickly pressing one of the buttons. The right button is for “next” and the left button is for “previous”.
The 6 LEDs on the right help to indicate the main electrical measurement pages and switch on according to the type of measurement shown
on the display at the time. The first measurement page that appears upon start-up can be programmed.
The “S” models with threshold allow you to configure the measurement to be controlled, the type of threshold (off, maximum or minimum),
the millesimal threshold value in relation to the full scale of the controlled measurement, time delay upon activation or deactivation, if
applicable, and the time delay in tenths of a second up to 25.5 seconds (0=no delay)
Refer to the “Programming” section for details on programming values and the “Operation of the programmable threshold” section.
The “485” models with RS485 interface can communicate via a network when they are assigned a programmable address of between 1
and 255. You are advised not to put more than 32 devices on a network so as to ensure reliable communication.
If this is not adequate, there are “special” versions able to support more than 64 devices.
Communication speed can be set at between 9600bps and 115,200bps.
You are advised to set the communication speed at maximum if only these devices are used.
If the speed is set too low and there are frequent requests and/or there is a high number of required records, interactions with the instrument
may also slow down. All measurements and parameters can be viewed on the MODBUS RTU reader interface.
The instrument also enables “on the fly” remote programming of the work settings via the MODBUS writer interface with the respective
records that support it. In certain situations you are also allowed to carry out some macro-operations and controls, such as restoring the
factory settings of models that enable this, resetting of the totalizers or direct switching on and off of the output relay for models with
threshold. Note: the “485” models offer additional measurements via Modbus, in particular single phase measurements of the powers and
cosφ values. Some models feature a blackout indication page.
It is like the measurement page but with flashing content which has to be programmed like the initial page shown on start-up.
When you press the keys to change the measurement page, the “blackout” condition is reset. This is proposed again after any programming
of the settings on the keyboard.
Some models feature 2 counters – one for total operation and another that can be reset. The latter allows you to check the average
consumption if reset together with one or more energy totalizers.
Some models require a 3-digit password (that can be excluded) to change the work settings and reset the counters.
This password is not intended to guarantee full protection but to prevent accidental access to the programming area and ensure the settings
are not changed by someone not authorized to do so.
There is no easy way to recover or cancel a password that has been configured and then forgotten. You will have to try all the
combinations or return the product to the factory for reprogramming.
1RAEM4 Impaginato I_GB_SPA:1 11-02-2009 17:37 Pagina 9
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