Watlow Series SD31 PID with Optional Countdown Timer Instrukcja Użytkownika Pobierz pdf (Strona 11)

Watlow Series SD31 ■ 9 ■ Chapter 2 Install and Wire

Figure 9a — Output 1 Switched DC

SD31 - _ C _ _ - _ _ _ _

• Supply current 30 mAÎ (dc) maximum

• Supply voltage 6 to 12VÎ (dc)

• Not recommended for switching mechanical relays

• Output supplies power

Figure 9b — Output 1 Process

SD31 - _ F _ _ - _ _ _ _

• Analog output is scalable between 0 to 10VÎ (dc) or 0 to 20 mAÎ (dc)

• Load capability: voltage 1 kΩ minimum; current 800 Ω maximum

• Output supplies power

• Cannot use voltage and current output at the same time

Figure 9c — Output 2 Mechanical Relay

SD31 - _ _ J _ - _ _ _ _

• Form A contact

• 2 A, resistive

• 125 VA pilot duty, 120/240VÅ (ac), inductive

• See Quencharc note

• 240VÅ (ac) maximum

• 30VÎ (dc) maximum

• For use with ac or dc

• Minimum load current 10 mA

• Output does not supply power

Internal Circuitry

COM.

N.O.

Mechanical Relay

normally open

common

volts+ 6

com- 7

amps+ 5

Internal Circuitry

dc-

dc+

Load

Switched DC

dc+

dc-

Warning:

Use National Electric (NEC) or

other country-specific standard

wiring and safety practices when

wiring and connecting this con-

troller to a power source and to

electrical sensors or peripheral

devices. Failure to do so may re-

sult in damage to equipment and

property, and/or injury or loss of

life.

Note: To prevent ground loops,

isolation needs to be maintained

from input to output when using

switched DC or analog process

outputs.

Quencharc Note:

Switching pilot duty inductive

loads (relay coils, solenoids,

etc.) with the mechanical relay

or solid-state relay output op-

tions requires use of an R.C.

suppressor.

Watlow carries the R.C. sup-

pressor Quencharc brand name,

which is a trademark of ITW

Paktron. Watlow Part No. 0804-

0147-0000.

Spring clamp wiring connector

note:

To insert the wire, push the wire

into the desired connection num-

ber, and it should automatically

lock into place. To remove the

wire, press and hold the orange

release tab with a small screw-

driver. Pull the wire out of the

connection. Solid or tinned wire

recommended.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 71 72

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Watlow Series SD31 PID with Optional Countdown Timer Instrukcja Użytkownika Strona 11

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