SPI9000 Inverter Unit FI9 – FI14 User Manual

September 2006

Table 4-3: Control I/O Terminal Signals on Option Board A2

OPTA2

21

RO1/1

Relay output 1

Switching capacity

24V DC/8A

 

 

 

 

250V AC/8A

22

RO1/2

 

 

 

 

125V DC/0.4A

 

 

 

 

23

RO1/3

 

Min. switching load

5V/10 mA

 

 

 

 

 

24

RO2/1

Relay output 2

Switching capacity

24V DC/8A

 

 

 

 

250V AC/8A

25

RO2/2

 

 

 

 

125V DC/0.4A

 

 

 

 

26

RO2/3

 

Min. switching load

5V/10 mA

 

 

 

 

 

Table 4-4: Control I/O Terminal Signals on Option Board A3

 

 

 

 

 

 

OPTA3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

RO1/1

Relay output 1

Switching capacity

24V DC/8A

 

 

 

 

250V AC/8A

22

RO1/2

 

 

 

 

125V DC/0.4A

 

 

 

 

23

RO1/3

 

Min. switching load

5V/10 mA

 

 

 

 

 

24

RO2/1

Relay output 2

Switching capacity

24V DC/8A

 

 

 

 

250V AC/8A

25

RO2/2

 

 

 

 

125V DC/0.4A

 

 

 

 

26

RO2/3

 

Min. switching load

5V/10 mA

 

 

 

 

 

28

TI1+

Thermistor input

 

 

 

 

 

 

 

29

TI1-

 

 

 

 

 

 

 

 

Digital Input Signal Inversions

The active signal level depends on which potential the common inputs CMA and CMB (terminals 11 and 17) are connected to. The alternatives are either +24V or ground (0V). See Figure 4-9.

We recommend the use of positive logic in all control connections of the inverter. If negative logic is used, additional appropriate measures are needed to meet the safety regulation requirements.

The 24 volt control voltage and the ground for the digital inputs and the common inputs (CMA, CMB) can be either internal or external.

+24V

 

 

Ground

 

 

 

 

 

DIN1

 

 

 

DIN1

 

 

 

 

 

 

 

 

 

DIN2

 

 

 

DIN2

 

 

 

DIN3

 

 

 

DIN3

Ground

 

 

CMA

+24V

 

 

CMA

 

 

 

 

 

 

 

 

 

 

 

 

Figure 4-9: Positive/Negative Logic

Positive logic (+24V is the active signal) = Input is active when the switch is closed.

Negative logic (0V is the active signal) = Input is active when the switch is closed.

Requires setting of jumper X3 to position “CMA/CMB isolated from ground.”

MN04004002E

For more information visit: www.EatonElectrical.com

4-7

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Eaton Electrical SPI9000 user manual Digital Input Signal Inversions, Control I/O Terminal Signals on Option Board A2

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