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Output 2 wiring, Switched dc, open collector, External signal conditioner power supply – Watlow Series 988 User Manual

Page 23: Ac outputs

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WATLOW Series 988 User’s Manual

2.13

Installation and Wiring, Chapter 2

Output 2 Wiring

Figure 2.13b —

Switched DC, Open Collector

98 _ _ - _ _ _ C - _ _ _ _

Maximum voltage: 42VО

О (dc)

Maximum current: 1A

15

External

Load

+

16

17

-

COM

Figure 2.13d —

0-5V

О

О

, 1-5V

О

О

and 0-10V

О

О

(dc) Process

98 _ _ - _ _ _ F - _ _ _ _

Minimum load impedance: 1K

Figure 2.13c —

0-20mA and 4-20mA Process

98 _ _ - _ _ _ F - _ _ _ _

Maximum load impedance: 800

15

+

-

17

16

+

-

17

Figure 2.13e —

External Signal Conditioner Power Supply

98 _ _ - _ _ _ T - _ _ _ _

15

16

1

2

+

-

+V

-V

Transmitter

4-20mA out

Input
1 or 2

-

+

Figure 2.13a —

AC Outputs

Solid-state Relay

with Contact Suppression

98 _ _ - _ _ _ B - _ _ _ _

0.5 amps, minimum off-state impedance: 20K

Electromechanical Relay

with Contact Suppression

(Suppression between NO and COM contacts only)

98 _ _ - _ _ _ D - _ _ _ _

Form C, 5 amps, minimum off-state impedance: 20K

Electromechanical Relay

without Contact Suppression

98 _ _ - _ _ _ E - _ _ _ _

Form C, 5 amps off-state impedance: 31M

Solid-state Relay

without Contact Suppression

98 _ _ - _ _ _ K - _ _ _ _

0.5 amps, off-state impedance: 31M

External

Load

COM

L1

L2

Fuse

NO

15

16

NC

17

(#17 for D & E outputs only)

+

Internal Circuitry

15

16

17

790

19 to 32V

Î

(dc)

NOTE:
Successful installa-
tion requires five
steps:
• Model number and
software choice
(

Appendix

);

• DIP switch set-
tings (

Chapter 1

);

• Sensor match
(

Chapter 2

and

Appendix

);

• Sensor installation
(

Chapter 2

); and

• Wiring (

Chapter 2

).

˜

NOTE:
Input-to-output iso-
lation is defeated
when the external
signal conditioner
power supply is
used to power a
transmitter connect-
ed to input 1 or
input 2.

NOTE:
Switching inductive
loads (relay coils,
solenoids, etc.) with
the mechanical
relay or solid state
relay output options
requires using an
R.C. suppressor.
Watlow carries the
R.C. suppressor
Quencharc brand
name, which is a
trademark of ITW
Paktron. Watlow
Part No. 0804-0147-
0000.

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