Cubiclebus Modules; Digital Input Module; Zsi Module; Analog Output Module - Siemens ETU745 Application Manual

WL Circuit Breaker
Accessories

CubicleBUS modules

External CubicleBUS modules enable the WL Circuit Breaker a
way to interface with external switchgear controls or building
management systems. They can be used, for example, to activate
analog displays or devices, transmit circuit breaker status and
cause of trip, or read external device control signals. One
module is suitable for zone-selective interlocking main and
branch breakers.
Three different CubicleBUS modules can output data from the
CubicleBUS system (two digital output modules and one analog
output module). A digital input module can transmit data from
the switchgear or system to a PROFIBUS/MODBUS master device
like a power meters or logic controllers.
Digital Output Module with Rotary Switch – The digital output
module can be used to output six events. These events can be
warnings or trips and can be used for external annunciation or
control. The load shedding and load restoring signals can enable
a load to be switched ON or OFF automatically. Voltages of up
250V AC/DC are possible. The relay contacts are isolated.
Relay Digital Output Module: Order part number WLRLYCUB

Digital input module

The digital input module enables up to six additional binary
signals (24V DC) to be connected. Signals, such as breaker
status, arc-flash current reduction, over-temperature conditions
or control circuit status switchgear, can be transmitted directly
to the power monitoring network.
A total of 6 inputs are available in the "BUS Input" Switch
position. Six inputs are also available if the rotary switch is in
the "Parameter Switch" position, although the first input causes
the active parameter set to change. If the connected ETU does
not have two parameter set capability (e.g. ETU745 or ETU748),
this input can also be used without any restrictions.
Digital Input Module: Order part number WLDGNCUB
24
Courtesy of NationalSwitchgear.com

ZSI module

To use the ZSI function with the WL Circuit Breaker, the external
CubicleBUS ZSI module must be implemented. The zone selective
interlocking (ZSI) module provides the complete range of
selectivity with the short delay time of tZSI = 50 ms, irrespective
of the number of levels and the location of the short-circuit in
a distribution system. Its benefits become even more apparent,
the higher the number of levels in large systems and the longer
the resulting delay times. By shortening the time, the ZSI module
significantly reduces stress and damage in the event of a short-
circuit in the switchgear.
Zone Selective Interlocking Module: Order part number WLZSIMD

Analog output module

The analog output module can be used to output the most
important measured values sent via the CubicleBUS to analog
indicators (e.g. analog meters) in the switchgear cubicle door.
Each analog output module has four channels for this purpose.
The signals are available at two physical interfaces: a 4 ... 20mA
and a 0 ... 10V interface.
Analog output module: order part number WLANLGCUB

Pre-assembled CubicleBUS communication cables

(RJ45-M connections)
1 meter length: order part number WLCBUSCABLE1
2 meter length: order part number WLCBUSCABLE2
4 meter length: order part number WLCBUSCABLE4
9 meter length: order part number WLCBUSCABLE9
WL Circuit Breaker Selection and Application Guide