The intermediate calculations of the functions used in the user program, necessary for the
following cycles, are placed in variables called historic variables. It is also possible to save
historic variables
Presentation / operation
Central units
40 Series
07 CR 41 24VDC Extensible stand-alone central unit,
with 8 isolated inputs 24 V d.c. and 6 incorporated relay outputs
250 V a.c. / 2 A
RS232 interface for programming or ASCII or MODBUS
communication
24 V d.c. power supply.
1SBP260020R1001
07 CR 41 120/230VAC Extensible stand-alone central unit,
with 8 isolated inputs 24 V d.c. and 6 incorporated relay outputs
250 V a.c. / 2 A
RS232 interface for programming or ASCII or MODBUS
communication
24 V d. c. power supply output to power inputs
120 / 230 V a.c. power supply
1SBP260021R1001
07 CT 41 24VDC Extensible stand-alone central unit,
with 8 isolated inputs 24 V d.c. and 6 incorporated transistor
outputs 24 V d.c. / 0.5 A
RS232 interface for programming or ASCII or MODBUS
communication
24 V d.c. power supply
1SBP260022R1001
50 Series
07 KR 51 24VDC Extensible central unit with CS31 bus
with 8 isolated inputs 24 V d.c. and 6 incorporated relay outputs
250 V a.c. / 2 A
RS232 or RS485 interface
for programming or ASCII or MODBUS communication
24 V d.c. power supply
1SBP260010R1001
07 KR 51 120/230VAC Extensible central unit with CS31 bus
with 8 isolated inputs 24 V d.c. and 6 incorporated relay outputs
250 V a.c. / 2 A
RS232 or RS485 interface
for programming or ASCII or MODBUS communication
24 V d.c. power supply output to power inputs
120 / 230 V a.c. power supply.
1SBP260011R1001
07 KT 51 24VDC Extensible central unit with CS31 bus
with 8 isolated inputs 24 V d.c. and 6 incorporated transistor
outputs 24 V d.c. / 0.5 A
RS232 or RS485 interface
for programming or ASCII or MODBUS communication
24 V d.c. power supply
1SBP260012R1001
Programming software
ABB AC31GRAF Programming software for central units,
under Windows 3.x, NT and 95/98. English version
1SBS260250R1001
ABB AC31GRAF Programming software for central units,
under Windows 3.x, NT and 95/98. French version
1SBS260251R1001
ABB AC31GRAF Programming software for central units,
under Windows 3.x, NT and 95/98. Italian version
1SBS260252R100
Presentation / operation
Products Description References
Central units
90 Series
07 KR 91 230VAC Extensible central unit with CS31 bus, memory
20 isolated inputs 24 V d.c. and 12 relay outputs 250 V a.c. / 2 A
120/230 V a.c. power supply.
GJR5250000R0252
07 KR 91 24VDC Extensible central unit with CS31 bus
20 isolated inputs 24 V d.c. and 12 relay outputs 250 V a.c. / 2 A
24 V d. c. power supply
GJR5250000R0202
07 KT 92 24VDC Extensible central unit with CS31 bus
12 isolated inputs 24 V d.c. and 8 transistor outputs 24 V d.c. / 0.5 A
with 4 analog inputs and 2 analog outputs
interface for programming or ASCII or MODBUS communication
24 V d.c. power supply
GJR5250500R0202
07 KT 92 24VDC Extensible central unit with CS31 bus
12 isolated inputs 24 V d.c. and 8 transistor outputs 24 V d.c. / 0.5 A
with 4 analog inputs and 2 analog outputs
interface for programming or ASCII or MODBUS and ARCNET
communication
24 V d.c. power supply
GJR5250500R0262
07 KT 93-S 24VDC Extensible central unit with CS31 bus
24 isolated inputs 24 V d.c. and 16 transistor outputs 24 V d.c. / 0.5 A
with security automation
24 V d.c. power supply
GJR5251300R2171
07 KT 93 24VDC Extensible central unit with CS31 bus
24 isolated inputs 24 V d.c. and 16 transistor outputs 24 V d.c. / 0.5 A
interface for programming or ASCII or MODBUS communication
24 V d.c. power supply
GJR5251300R0303
07 KT 93 24VDC Extensible central unit with CS31 bus
24 isolated inputs 24 V d.c. and 16 transistor outputs 24 V d.c. / 0.5 A
interface for programming or ASCII or MODBUS and ARCNET
communication
24 V d.c. power supply
GJR5251300R0363
07 KT 94 24VDC Extensible central unit with CS31 bus
24 isolated inputs 24 V d.c. and 16 transistor outputs 24 V d.c. / 0.5 A
8 channels configurable for inputs or transistor outputs 24 V d.c. / 0.5 A
8 analog inputs and 4 analog outputs
interface for programming or ASCII or MODBUS communication
24 V d.c. power supply
GJR5252100R0101
07 KT 94 24VDC Extensible central unit with CS31 bus
24 isolated inputs 24 V d.c. and 16 transistor outputs 24 V d.c. / 0.5 A
8 channels configurable for inputs or transistor outputs 24 V d.c. / 0.5 A
8 analog inputs and 4 analog outputs
interface for programming or ASCII or MODBUS and ARCNET
communication
24 V d.c. power supply
GJR5252100R0161
Presentation / operation
ABB Control - AC 31 Page 1-15
1SBC 260400 R1001-c 01.02
Products Description References
90 Series
Communication couplers
07 KP 90 * RCOM protocol master / slave interface
24 V d.c. power supply.
GJR5251000R0202
07 KP 91 * EIB coupler 1SAY110165R0003
07 MK 92 Two “C” programmable RS232 / RS422 or RS485 interfaces
24 V d.c. power supply
GATS110098R1161
07 KP 93 Two MODBUS protocol RS232 / RS422 or RS485 interfaces
slave / slave or master
24 V d.c. power supply
GATS110100R0001
07 KP 95 * Coupler for ADVANT AF 100 network GJR5252000R0101
07 KP 96 * PDnet coupler in order to communicate with
24 V d.c. power supply
KOAX
KOAX with redundancy
Optic fiber (plastic) LWL
Optic fiber (plastic) LWL with redundancy