Jumpers; External Power Supply For The Jcu Control Unit (Xpow) - ABB ACS850 Hardware Manual

Jumpers

DI/DIO grounding selector (located between XD24 and XDI) – Determines whether
the DIGND (ground for digital inputs DI1...DI5) floats, or if it is connected to
DIOGND (ground for digital input DI6, and digital input/outputs DIO1 and DIO2).
If DIGND floats, the common of DI1...DI5 (either GND or V
connected to XD24:2. (See the JCU isolation and grounding diagram on page
85.)
DIGND floats
AI1 – Determines whether Analog input AI1 is used as a current or voltage input.
Current
AI2 – Determines whether Analog input AI2 is used as a current or voltage input.
Current
T – Drive-to-drive link termination. Must be set to the ON position when the drive is
the last unit on the link.
Termination ON
T

External power supply for the JCU Control Unit (XPOW)

External +24 V (minimum 1.6 A) power supply for the JCU Control Unit can be
connected to terminal block XPOW. Using an external supply is recommended if
• the application requires fast start after connecting the drive to the main supply
• fieldbus communication is required when the input power supply is disconnected.
2
3
4
1
2
7
AI1
AI2
1
7
AI1
AI2
1
DIGND tied to DIOGND
2
3
4
1
2
Voltage
7
AI1
AI2
1
Voltage
7
AI1
AI2
1
Termination OFF
T
63
) should be
cc
Electrical installation