Watlow EZ-ZONE
®
PM Integrated Controller
•
32
•
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
2
(30 to 12
AWG) single-wire termination or
two 1.31 mm
2
(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:
ç
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:
ç
Explosion Hazard – Substitution of
component may impair suitability
for CLASS I, DIVISION 2.
Warning:
ç
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, 3 Solid-State Relay, Form A
normally open
common
L_
K_
Slot A, B
• 0.5 A at 20 to 264V
Å
(ac) maxi-
mum resistive load
• 20 VA 120/240V
Å
(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.
Output 1: (L1, K1)
PM _ _ _
[K]
_ - _ _ _ _ _ _ _
Output 3: (L3, K3)
PM _ _ _
_
_ - _ _
[K]
_ _ _ _
L_
K_
1.1
0
-20
50
40
30
20
10
0
-10
60
70
A
mps RMS
Ambient Temperature (
o
C)
0.1
1
0.2
0.9
0.3
0.4
0.5
0.6
0.7
0.8
1 Amp SSR Derating Curve
Saf
e Oper
ating A
rea
Output 2, 4 Switched DC
dc+
dc-
W_
Y_
Slot A, B
• 10 mA DC maximum supply cur
-
rent
• short circuit limited to <50 mA
• 22 to 32V
Î
(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
Output 2: (-W2, +Y2)
PM _ _ _
_
[C]
- _ _ _ _ _ _ _
Output 4: (-W4, +Y4)
PM _ _ _
_
_ - _ _
_
[C]
_ _ _
dc +
dc -
common
24V
W_
Y_