inputs and outputs are usually powered by an internal 24VDC
power supply. This power supply is rated 200 mA. An EXTERNAL, customer supplied,
power supply can be used in place of the internal power supply. An isolated DC power
supply with tightly regulated 24VDC output voltage is recommended.


Procedure:

A.

OPTO-ISOLATED INPUTS

1.

The opto-isolated inputs (Terminals J2-8 to J2-16) are normally operated
by closing contacts or switches between them and the input common, as
shown in the instruction manuals for each type of VS1 control. Factory
connection of J2-8 (Enable) is made to J3-24 for internal ACTIVE
LOW connection. Jumper JP5, located in the lower right hand corner of
the control circuit board is in position 2 and 3 (DFT side).

2.

If an ACTIVE HIGH connection is desired with internal power supply,
move jumper JP5 to position 2 and 3 of jumper JP6 (INP side), located
just above the jumper JP5 location.

3.

If an EXTERNAL, customer supplied, 24VDC power supply is used, it
will be necessary to again reposition jumper JP5/JP6. If ACTIVE LOW (Sinking) connection is used, place jumper JP5 in position 1 and 2 (EPN
side), and connect the power supply positive (+) and negative (-) terminals
as shown in Fig 1. Active Low Connections.

4.

If an ACTIVE HIGH (Sourcing) connection is used with an
EXTERNAL power supply, place jumper JP6 in position 1 and 2 (ENP
side), and connect the power supply positive (+) and negative (-) terminals
as shown in Fig. 1 Active High Connections.

Note: Jumper JP5/JP6 described above is one jumper only and it is called JP5
or JP6 based on the location on the control board as shown in Fig. 1.



Fig. 1.


User Provided

24V Power Source
+

-

Externally Supplied 24VDC
Enable

J2

Digital Input 1

Digital Input 2

Digital Input 3

Digital Input 4

Digital Input 5

Digital Input 6

*

*

*

Digital Input 7

Digital Input 8

*

21

J3

22

23

24

Active High Connections
Active Low Connections
Enable
J2
Digital Input 1
Digital Input 2
Digital Input 3
Digital Input 4
Digital Input 5
Digital Input 6
*
*
*
Digital Input 7
Digital Input 8
*
21
J3
22
23
24
8
9
10
11
12
13
14
15
16
8

9

10

11

12

13

14

15

16

Source

Sink
User Provided
24V Power Source
+
-
JP6

JP5

ENP

EPN

INP
DFT
JP6
JP5
ENP
EPN
INP
DFT
External User Return
External User +24V
Internal +24V

Internal 24V Return
External User Return
External User +24V
Internal +24V
Internal 24V Return



B.

OPTO-ISOLATED OUTPUTS

1.

Two programmable opto-isolated outputs are provided on terminals J2-17
to J2-20. These outputs can be used for external monitoring of various
drive conditions. Each opto output is programmed in Level 1, OUTPUT
SET-UP programming block. They are often powered from an internally
supplied 24VDC. Opto outputs are rated 24VDC @ 60 mA resistive (non-
inductive) load. The maximum voltage drop from digital output to
common, when active, is 1.0VDC (TTL compatible).
2.

The two opto-isolated outputs can be used to switch an EXTERNAL 10-
30VDC supply, and may be configured for either a sourcing or sinking
mode. However, both must be configured the same. Power connections
for sourcing and sinking modes with EXTERNALLY supplied 24VDC are
shown in Fig. 2.

If the digital outputs are used to directly drive a DC relay coil, a flyback
diode rated at 1 Amp, 100V (IN 4002 or equivalent) should be connected
across the relay coil to reduce noise transmission as shown in Fig. 3.



Fig. 2.


Externally Supplied 24VDC
Sinking Current Connections
Sourcing Current Connections
J2

Digital Output 1 +
Digital Output 1 -
Digital Output 2 +
Digital Output 2 -
21

J3

Internal 24V Return
22

23

24

17

18

19

20

Out1

Out2

External User Return
External User +24V
Internal +24V
User

24VDC

-

+

User
24VDC
-
+
J2
Digital Output 1 +
Digital Output 1 -
Digital Output 2 +
Digital Output 2 -
21
J3
Internal 24V Return
22
23
24
17
18
19
20
Out1
Out2
External User Return
External User +24V
Internal +24V



3.

Two programmable relay outputs are also provided. They are available as
Form-C, Normally Open (N.O.) and Normally Closed (N.C.), voltage-free
contacts on terminals J3-25 to J3-30. Relay outputs are rated 10-30VDC
or 240VAC @ 5 Amp resistive (non-inductive) load.

If the relay outputs are used to directly drive an AC relay coil, install an RC snubber
(0.47 uF capacitor in series with a 33 ohm resistor) across the coil to reduce noise
transmission. For a DC relay coil use a flyback diode as described in item B-2 above.


The relay contacts and AC/DC coil noise suppression circuits are shown in Fig. 3.




Fig. 3.


J3

30

Relay Out 2 N.O.

25

26

27

Relay Out 1 N.C.

Relay Out 1 COM

Relay Out 1 N.O.

*

28

29

Relay Out 2 N.C.

Relay Out 2 COM

Load

Load

*

Load

Load

RE
+
-
If the load is a DC relay
coil, install a flyback diode
across the coil to reduce
noise transmission.
RE

If the load is an AC relay

coil, install an RC Snubber

across the coil to reduce

noise transmission.
RC snubber
0.47 mf
33 W
Control Board






Opto-isolated input and output circuits are shown in Fig. 4.



Fig. 4.

6.8K
6.8K
6.8K
6.8K
6.8K
6.8K
6.8K
6.8K
6.8K
15
16
Digital Input 7
Digital Input 8
8
9
10
11
12
13
14
J2
Enable
Digital Input 1
Digital Input 2
Digital Input 3
Digital Input 4
Digital Input 5
Digital Input 6
Opto In Common
17
18
19
20
Digital Output 1 + (Collector)
Digital Output 1 - (Emitter)
Digital Output 2 + (Collector)
Digital Output 2 - (Emitter)
J2
PC865
50mA max
PC865
50mA max