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Warning:
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 elec-
trical sensors or peripheral
devices . Failure to do so may
result in damage to equip-
ment and property, and/or
injury or loss of life .
Note:
Maximum wire size termina-
tion and torque rating:
• 0.0507 to 3.30 mm
2 (30 to
12 AWG) single-wire termi-
nation or two 1 .31 mm2 (16
AWG)
• 0.8 Nm (7.0 lb.-in.) torque
Note:
Adjacent terminals may be
labeled differently, depend-
ing on the model number .
Note:
To prevent damage to the
controller, do not connect
wires to unused terminals .
Note:
Maintain electrical isolation
between analog input 1, digi-
tal input-outputs, switched
dc/open collector outputs and
process outputs to prevent
ground loops .
Note:
The control output common
terminal and the digital com-
mon terminal are referenced
to different voltages and
must remain isolated .
Watlow EZ-ZONE
®
PM PID Controller
•
18
•
Chapter 2 Install and Wire
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 . sup-
pressor .
Output 1 Universal Process
Universal Process
(Output 1)
volts or current -
c
volts +
F1
G1
H1
L2
K2
T1
S1
R1
Slot A
• 0 to 20 mA into 800 Ω maxi
-
mum load
• 0 to 10V
Î
(dc) into voltage 1
kΩ minimum 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 +
c
F_
G_
H_
4 to 20 mA
0 to 10 V
Output 1 Solid-State Relay, Form A
normally open
common
L1
K1
Slot A
• 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.
PM _ _ _
[K]
_-_ AAAA _ _
L_
K_
1.1
0
-20
50
40
30
20
10
0
-10
60
70
Amps RMS
Ambient Temperatue (
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 Operating Area
Output 2 Switched DC
dc+
dc-
W2
Y2
Slot A
• 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
PM _ _ _ _
[C]
-_ AAAA _ _
dc +
dc -
common
Y_
W_
24V
