Output 1 switched dc/open collector, Output 1 mechanical relay, form c, Output 1 universal process – Watlow EZ-ZONE PM PID User Manual

Page 23

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.

Output 1 Switched DC/Open Collector

dc - (open collector)

dc +

common

Slot A

Switched DC
• 30 mA dc maximum supply cur-

rent

• Short circuit limited to <50 mA
• 22 to 32VÎ (dc) open circuit

voltage

• Use dc- and dc+ to drive exter-

nal solid-state relay.

• DIN-A-MITE compatible
• Single-pole: up to 4 in parallel

or 4 in series

• 2-pole: up to 2 in parallel or 2 in

series

• 3-pole: up to 2 in series
Open Collector
• 100 mA maximum output cur-

rent sink

• 30VÎ (dc) maximum supply

voltage

• Any switched dc output can use

the common terminal.

• Use an external power supply to

control a dc load, with the load

positive to the positive of the

power supply, the load negative

to the open collector and com-

mon to the power supply nega-

tive.

See Quencharc note.
PM _ _ _ [C] _-_ AAAA _ _

Switched DC

dc +

dc -

common

24V

Open Collector

Load

Power Supply

dc -

common

24V

Output 1 Mechanical Relay, Form C

normally open

normally closed

common

L1
K1
J1

Slot A

• 5 A at 240VÅ (ac) or 30VÎ (dc)

maximum resistive load

• 20 mA at 24V minimum load
• 125 VA pilot duty at 120/240VÅ

(ac), 25 VA at 24VÅ (ac)

• 100,000 cycles at rated load
• Output does not supply power.
• for use with ac or dc
See Quencharc note.
PM _ _ _ [E] _-_ AAAA _ _

normally open

common

normally closed

Output 1 Universal Process

Universal Process

(Output 1)

volts or current -

current +

volts +

F1
G1
H1

Slot A

• 0 to 20 mA into 800 Ω maxi-

mum load

• 0 to 10VÎ (dc) into 1 kΩ mini-

mum load

• scalable
• output supplies power
• cannot use voltage and current

outputs at same time

• Output may be used as re-

transmit or control.

PM _ _ _ [F] _-_ AAAA _ _

negative

volts +

current +

4 to 20 mA

0 to 10 V

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.