
isoCHA425_D00352_02_Q_DEEN / 11.2023 11
ISOMETER® isoCHA425
Time response
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) .......................................................≤ 1,200 m
Cable (shield connected to PE on one side):
recommended:............................................. CAT6/CAT7 min. WG23
twisted pairs: ...................................................min. J-Y(St)Y 2 x 0.8
Terminating resistor............ 120 Ω (0.25 W), internal, can be connected
Device address, BMS bus, Modbus RTU.................................3…90 (3)*
Connection
Connection type.....................................screw-type/push-wire terminal
Screw-type terminals:
Nominal current....................................................................≤ 10 A
Tightening torque..................................0.5…0.6 Nm (5…7 lb-in)
Cross section .............................................................. 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................................................0.2…1.5 mm2
Multi-conductor flexible ...........................................0.2…1.5 mm2
Multi-conductor flexible with ferrules without plastic sleeve..........
................................................................................0.25…1.5 mm2
Multi-conductor flexible with TWIN ferrules with plastic sleeve......
................................................................................0.25…1.5 mm2
Push-wire terminals:
Nominal current....................................................................≤ 10 A
Cross section .............................................................. AWG 24…14
Stripping length....................................................................10 mm
Rigid..........................................................................0.2…2.5 mm2
Flexible with ferrules with plastic sleeve ................0.75…2.5 mm2
Flexible with ferrules with/without plastic sleeve ...........................
................................................................................0.25…2.5 mm2
Multi-conductor flexible with TWIN ferrules with plastic sleeve......
..................................................................................0.5…1.5 mm2
Opening force............................................................................50 N
Test opening, diameter........................................................2.1 mm
Other
Operating mode...................................................... continous operation
Mounting.............................. cooling slots must be ventilated vertically
Degree of protection built-in components (DIN EN 60529)..............IP30
Degree of protection terminals (DIN EN 60529)...............................IP20
Zeitverhalten
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) ..................................................... ≤ 1 200 m
Leitung (Schirm einseitig an PE)
empfohlen: ..................................................... CAT6/7 min. AWG23
alternativ paarweise verdrillt:..........................min. J-Y(St)Y 2 x 0,8
Abschlusswiderstand.......................120 Ω (0,25 W), intern, zuschaltbar
Geräteadresse, BMS-Bus, Modbus RTU .................................3…90 (3)*
Anschluss
Anschlussart............................................... Schraub- oder Federklemme
Schraubklemmen:
Nennstrom............................................................................≤ 10 A
Anzugsmoment......................................0,5…0,6 Nm (5…7 lb-in)
Querschnitt ....................................................................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.........................................................0,2…1,5 mm2
Mehrleiter flexibel.....................................................0,2…1,5 mm2
Mehrleiter flexibel mit Aderendhülse ohne Kunststoffhülse............
................................................................................0,25…1,5 mm2
Mehrleiter flexibel mit TWIN Aderendhülse mit Kunstoffhülse........
................................................................................0,25…1,5 mm2
Federklemmen:
Nennstrom............................................................................≤ 10 A
Querschnitt ....................................................................AWG 24-14
Abisolierlänge.......................................................................10 mm
Starr..........................................................................0,2…2,5 mm2
Flexibel mit Aderendhülse ......................................0,75…2,5 mm2
Flexibel mit Aderendhülse mit/ohne Kunststoffhülse......................
................................................................................0,25…2,5 mm2
Mehrleiter flexibel mit TWIN Aderendhülse mit Kunstoffhülse........
..................................................................................0,5…1,5 mm2
Öffnungskraft............................................................................50 N
Testöffnung, Durchmesser...................................................2,1 mm
Sonstiges
Betriebsart......................................................................... Dauerbetrieb
Einbaulage..............Kühlschlitze müssen senkrecht durchlüftet werden
Schutzart Einbauten (DIN EN 60529) ...............................................IP30
Schutzart Klemmen (DIN EN 60529) ................................................ IP20