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76 The control unit
Terminal
X205
1) Must be set to ON when the supply unit is the first or last unit on the drive-to-drive (D2D) link. On intermediate
units, set termination to OFF.
2) Use of the signal in the control program. When parameter 120.30 External charge enable has value Yes (default
setting), the control program reserves this I/O terminal for external charging circuit control and monitoring, and
parameters 110.24 RO1 source and 110.30 RO3 source are write-protected. If the value is No, you can use the I/O
terminal for other purposes.
3) Use of the signal in the control program (fixed). See also the delivery-specific circuit diagrams.
4) This input only acts as a true Safe torque off input in inverter units. In other applications (such as a supply or brake
unit), de-energizing the IN1 and/or IN2 terminal will stop the unit but not constitute a SIL/PL classified safety
function.
5) Total load capacity of these outputs is 4.8 W (200 mA at 24 V) minus the power taken by DIO1 and DIO2.
6) Determines whether DICOM is separated from DIOGND (ie, common reference for digital inputs floats). ON: DICOM
connected to DIOGND. OFF: DICOM and DIOGND separate.
7) Current [0(4)...20 mA, R
of setting requires reboot of control unit.
8) Current [0(4)...20 mA, R
of setting requires reboot of control unit.
Connecting motor temperature sensors to the drive
IEC/EN 60664 requires double or reinforced insulation between the control unit and
the live parts of the motor. To achieve this, use an FPTC-01 or FPTC-02 protection
module or an FAIO-01 extension module. See
and modules electrical planning instructions (3AXD50000048634)
manual.
Power supply for the control unit (XPOW)
The control unit is powered from a 24 V DC, 2 A supply through terminal block XPOW.
With a type BCU/UCU control unit, a second supply can be connected to the same
terminal block for redundancy.
Using a second supply is recommended, if:
•
the control unit needs to be kept operational during input power breaks, for
example, because of continuous fieldbus communication
•
immediate restart is needed after a power break (that is, no control unit power-up
delay is allowed).
The X485 connector
The X485 provides a connection for optional CIO-01 I/O module. The following diagram
shows the wiring for the CIO module.
BCU
X485
B
A
BGND
SHIELD
Description
Memory unit connection
= 100 ohm] or voltage [0(2)...10 V, R
in
= 100 ohm] or voltage [0(2)...10 V, R
in
> 200 kohm] input selected by switch AI1. Change
in
> 200 kohm] input selected by switch AI2. Change
in
ACS880 liquid-cooled multidrives cabinets
CIO
X485
B
A
GND
SHIELD
and the module
CIO
X485
B
A
GND
SHIELD
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