IME Nemo D4-Le Bedienunganleitung Seite 30

Transmission speed: 4800 – 9600 – 19200 – 38400 bit/s
ModBus message word format 1 : Big Endian – Little Endian – Swap
1 Just for 32-bit quantities
1.6b RS485 BACNET communication
Address number: 0...127
Transmission speed: 9600 – 19200 – 38400 - 76800 bit/s
Parity bit: none – even – odd
Network address: 0...4000
1.7 Relay output function: energy pulses, alarm, state of relay switching
The output relay can be used as energy pulse repeater, as alarm relay or for
(terminals 15-29)
remote-controlled state of relay switching
1.7a Energy pulses
Quantity that can be coupled: active or reactive energy
Pulse weight: 1 pulse/10Wh(varh) - 100Wh(varh) - 1kWh(kvarh) - 10 kWh(kvarh) -
100kWh(kvarh) - 1MWh(Mvarh) - 10MWh(Mvarh)
Width of the pulse: 50 - 100 - 200 - 300 - 400 - 500 ms
1.7b Alarm
Quantity that can be coupled: phase voltage
, phase current , , three-phase active power, three-phase reactive power.
L3-L1) (I1, I2, I3)
Intervention threshold: intervention point, decimal point, metering unit
Alarm type: min. or max.
Relay output contact: normally open (no) or normally closed (nC)
Hysteresis: 0...20%
Intervention delay: 0...99s
Reset delay: 0...99s
1.7c Remote-controlled state of relay switching, bistable mode (rMtb)
Relay output contact: normally open (no) or normally closed (nC)
t on: delay elapsed between the activation remote command and the change in the state of relay
t oF: delay elapsed between the reset remote command and the change in the state of relay
selectable values t on / t oF: 0...99s
1.7d Remote-controlled state of relay switching, time mode (rMtt)
Relay output contact: normally open (no) or normally closed (nC)
t on: delay elapsed between the activation remote command and the change in the state of relay
t oF: delay elapsed between the reset remote command and the change in the state of relay
selectable values t on / t oF: 0...99s
07/16 10783322 WEB E cod.MFD4421SR
(function available just for models with communication).
, interlinked voltage
(L1-N, L2-N, L3-N) (L1-L2, L2-L3,
Level 2
Password = 2001
2.1 Energy count mode
4 selectable measuring modes: synchronous, asynchronous, tariff, pulse metering
Synchronous (SYn): Partial energy count activated by 2 active digital inputs with
common point. Inputs type 2 EN61131-2 max. 27V dc
Asynchronous (ASYn): Partial energy count always on
Tariff (trFS): Tariff count subdivided on 4 registers. Tariff switching with external
contact
Pulse metering (Cntr): Partial energy count always on, pulse metering from 2 active
digital inputs
2.2 Full scale current and external VT ratio
Vt = External primary/secondary VT ratio
Ct = Full scale current value
Selectable values: 1000 – 3000 – 5000A
By modifying the full scale current value and/or external VT ratio, the energy KWH
meters are automatically reset
Phase sequence diagnostic
In the software of the device have added a specific functionality to detect and correct many
problems concerning voltage and / or current connection.
This function can be activated through password and allows to display and modify the connec-
tion sequence provided that the following conditions are respected:
1) The neutral wire (in a 4-wire network) is connected to the right terminal
2) No crossings between cables connected to CTs
1 and 3 - are connected some way both to CT1 and CT2)
3) The power factor is between 1 and 0,5 - Inductive load - for each phase.
See www.imeitaly.com "TECHNICAL SUPPORT"
Nemo D4-Le
Symbols
Tariff 1
°
☼
Tariff 2 ^
Tariff 3
Tariff 4
(ex. VT 600/100V Vt = 6)
(normally number1)
(e.g. avoid that on phase 1 of the meter-terminals
.
.
Rogowski
.
5