Watlow Ez-Zone PM8 - Digital Output 5, 6; Output 1 Mechanical Relay, Form C; Output 1 Switched DC;Open Collector

Watlow EZ-ZONE
®
PM PID Controller • 17 • Chapter 2 Install and Wire
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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 mm
2
(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.
Digital Output 5, 6
98
99
CF
CD
CE
B5
D6
D5
Slot C
Digital Output
• Updaterate10Hz
• Outputvoltage24V
• Currentlimit,Output5,24
mA maximum
• Currentlimit,Output6,
10 mA maximum driving
single pole DIN-A-MITE
• Capableofdrivinga3-pole
DIN-A-MITE
• Open-circuitvoltage22to
32VÎ (dc)
PM _ _ [2,4] _ _-_ _ _ _ _ _ _
B
24 Vdc
common
D
_
_
Output 1 Switched DC/Open Collector
dc - (open collector)
dc +
common
X1
W1
Y1
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
X
_
Y
_
W
_
24V
Open Collector
Load
P ower Supply
dc -
common
X
_
Y
_
W
_
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 _ _
J
normally open
common
normally closed
L
K
_
_
_
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.