
isoGEN423_D00221_04_Q_DEEN / 11.2023 7
ISOMETER® isoGEN423
Response values
Response value Ran1 ...........................................Ran2…250 kΩ (46 kΩ)*
Response value Ran2 ...............................................5 kΩ…Ran1 (23 kΩ)*
Relative uncertainty Ran...................................... ±15 %, at least ±2 kΩ
Hysteresis Ran............................................................ 25 %, at least 1 kΩ
Undervoltage detection U<...............................10 V … U> (off/10 V)*
Overvoltage detection U>.............................U< … 500 V (off/500 V)*
Relative uncertainty U............................................. ±5 %, at least ±5 V
Relative uncertainty
depending on the frequency ≥ 400 Hz...................... −0.015 %/Hz
Hysteresis U.............................................................5 %, at least 5 V
Time response
Response time tan at RF = 0.5 × Ran and
Ce = 1 μF acc. to IEC 61557-8.........................................................≤10 s
Start-up delay t................................................................0…10 s (0 s)*
Response delay ton ...........................................................0…99 s (0 s)*
Delay on release toff..........................................................0…99 s (0 s)*
Interface
Interface/protocol............................RS-485/BMS, Modbus RTU, isoData
Baud rate.............................BMS (9.6 kbit/s), Modbus RTU (selectable)
..............................................................................isoData (115.2 kbit/s)
Cable length (9.6 kbit/s)..........................................................≤1200 m
Cable (shield connected to PE on one side):
recommended:............................................. CAT6/CAT7 min. WG23
twisted pairs: ..................................................min. J-Y(St)Y 2 × 0.8
Terminating resistor.....................120 Ω (0.25 W), internal, connectable
Device address, BMS bus, Modbus RTU.................................3…90 (3)*
Connection with screw-type terminals
Nominal current ...........................................................................≤10 A
Tightening torque ........................................0.5…0.6 Nm (5…7 lb-in)
Conductor sizes ....................................................................AWG 24-12
Stripping length ............................................................................8 mm
Rigid/flexible ...................................................................0.2…2.5 mm2
Flexible with ferrules
with/without plastic sleeve ...........................................0.25…2.5 mm2
Multi-conductor
rigid /flexible ...................................................................0.2…1.5 mm2
flexible with ferrules
without plastic sleeve....................................................0.25…1.5 mm2
flexible with TWIN ferrules
with plastic sleeve ...........................................................0.5…1.5 mm2
Connection with push-wire terminals:
Nominal current ...........................................................................≤10 A
Conductor sizes ....................................................................AWG 24-14
Stripping length ..........................................................................10 mm
Rigid ................................................................................0.2…2.5 mm2
Flexible without ferrules
with/without plastic sleeve ...........................................0.75…2.5 mm2
Ansprechwerte
Ansprechwert Ran1 .............................................Ran2…250 kΩ (46 kΩ)*
Ansprechwert Ran2 .................................................5 kΩ…Ran1 (23 kΩ)*
Ansprechunsicherheit Ran..............................±15 %, mindestens ±2 kΩ
Hysterese Ran ......................................................25 %, mindestens 1 kΩ
Unterspannungserkennung U<.........................10 V … U> (off/10 V)*
Überspannungserkennung U>......................U< … 500 V (off/500 V)*
Ansprechunsicherheit U....................................±5 %, mindestens ±5 V
Frequenzabhängige Ansprechunsicherheit
≥ 400 Hz.................................................................... −0,015 %/Hz
Hysterese U......................................................5 %, mindestens 5 V
Zeitverhalten
Ansprechzeit tan bei RF = 0,5 × Ran und
Ce = 1 μF nach IEC 61557-8............................................................≤10 s
Anlaufverzögerung t........................................................0…10 s (0 s)*
Ansprechverzögerung ton.................................................0…99 s (0 s)*
Rückfallverzögerung toff...................................................0…99 s (0 s)*
Schnittstelle
Schnittstelle/Protokoll.....................RS-485/BMS, Modbus RTU, isoData
Baudrate.............................BMS (9,6 kbit/s), Modbus RTU (einstellbar),
..............................................................................isoData (115,2 kbit/s)
Leitungslänge (9,6 kbit/s)........................................................≤1200 m
Leitung (Schirm einseitig an PE)
empfohlen: ..................................................... CAT6/7 min. AWG23
alternativ paarweise verdrillt:.........................min. J-Y(St)Y 2 × 0,8
Abschlusswiderstand.......................120 Ω (0,25 W), intern, zuschaltbar
Geräteadresse, BMS-Bus, Modbus RTU .................................3…90 (3)*
Anschluss mit Schraubklemmen
Nennstrom................................................................................... ≤ 10 A
Anzugsmoment ............................................0,5…0,6 Nm (5…7 lb-in)
Leitergrößen.........................................................................AWG 24-12
Abisolierlänge............................................................................... 8 mm
Starr/flexibel....................................................................0,2…2,5 mm2
Flexibel mit Aderendhülse
mit/ohne Kunststoffhülse..............................................0,25…2,5 mm2
Mehrleiter
starr / flexibel ..................................................................0,2…1,5 mm2
flexibel mit Aderendhülse
ohne Kunststoffhülse.....................................................0,25…1,5 mm2
flexibel mit TWIN Aderendhülse
mit Kunstoffhülse ............................................................0,5…1,5 mm2
Anschluss mit Federklemmen
Nennstrom....................................................................................≤10 A
Leitergrößen.........................................................................AWG 24-14
Abisolierlänge ............................................................................ 10 mm
Starr ................................................................................0,2…2,5 mm2
Flexibel ohne Aderendhülse
mit/ohne Kunststoffhülse..............................................0,75…2,5 mm2