Output 1 solid-state relay, form a, Output 2 switched dc – Watlow EZ-ZONE PM PID User Manual

Page 24

Watlow EZ-ZONE

PM PID Controller

•

Chapter 2 Install and Wire

Warning:

Óç

Use National Electric (NEC) or other

country-specific standard wiring and

safety practices when wiring and

connecting this controller to a power

source and to electrical sensors or

peripheral devices. Failure to do so

may result in damage to equipment

and property, and/or injury or loss
of life.

Note:

Maximum wire size termination and

torque rating:

• 0.0507 to 3.30 mm

(30 to 12

AWG) single-wire termination or

two 1.31 mm

(16 AWG)

• 0.8 Nm (7.0 lb.-in.) torque

Note:

Adjacent terminals may be labeled

differently, depending on the model

number.

Note:

To prevent damage to the control-

ler, do not connect wires to unused
terminals.

Note:

Maintain electrical isolation between

analog input 1, digital input-outputs,

switched dc/open collector outputs

and process outputs to prevent
ground loops.

Note:

The control output common termi-

nal and the digital common terminal

are referenced to different voltages

and must remain isolated.

Note:

This Equipment is suitable for use in

CLASS I, DIVISION 2, Groups A, B,

C and D or Non-Hazardous locations
only. Temperature Code T4A

Warning:

Explosion Hazard - Dry contact clo-

sure Digital Inputs shall not be used

in Class I Division 2 Hazardous Loca-

tions unless switch used is approved
for this application.

Warning:

Explosion Hazard – Substitution of

component may impair suitability

for CLASS I, DIVISION 2.

Warning:

Explosion Hazard - Do not discon-

nect while the circuit is live or

unless the area is known to be free

of ignitable concentrations of flam-

mable substances.

Quencharc Note:

Switching pilot duty inductive loads

(relay coils, solenoids, etc.) with the

mechanical relay, solid state relay or

open collector output options requires

use of an R.C. suppressor.

Output 1 Solid-State Relay, Form A

normally open

common

Slot A

• 0.5 A at 20 to 264VÅ (ac) maxi-

mum resistive load

• 20 VA 120/240VÅ (ac) pilot duty
• opto-isolated, without contact

suppression

• maximum off state leakage of

105 microamperes

• output does not supply power
• Do not use on dc loads.
• See Quencharc note.
PM _ _ _ [K] _-_ AAAA _ _

1.1

-20

-10

Amps RMS

Ambient Temperature (

0.1

0.2

0.9

0.3

0.4

0.5

0.6

0.7

0.8

1 Amp SSR Derating Curve

Operating Area

Output 2 Switched DC

dc+

dc-

Slot A

• 10 mA dc maximum supply cur-

rent

• short circuit limited to <50 mA
• 22 to 32VÎ (dc) open circuit volt-

age

• use dc- and dc+ to drive external

solid-state relay

• DIN-A-MITE compatible
• single-pole: up to 2 in series,

none in parallel

PM _ _ _ _ [C]-_ AAAA _ _

dc +

dc -

common

24V