Instruction Manual

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 be-
tween Analog Input 1, Digital I/O,
Switched dc/open collector outputs
and Process outputs to prevent
ground loops.
Note:
The control output common
terminal and the digital common
terminal are referenced to different
voltages and must remain isolated.
Watlow EZ-ZONE
®
PM Limit Controller • 22 • Chapter 2 Install and Wire
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] _ _-_ _ _ _ _ _ _
*Output5only
24 Vdc
common
_
B
D
_
Output 1 Switched DC/Open Collector
dc - (open collector)
dc +
common
X1
W1
Y1
L2
K2
T1
S1
R1
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 common to the power sup-
ply negative.
PM _ _ _ [C] _-_ _ _ _ AAA
Switched DC
common
24V
X
_
dc +
dc -
W
_
Y
_
Open Collector
Load
Power Supply
dc -
common
24V
X
_
W
_
Y
_
Output 1 Mechanical Relay, Form C
Mechanical Relay
(Output 1)
normally open
normally closed
common
L1
K1
J1
L2
K2
T1
S1
R1
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] _-_ _ _ _ AAA
normally open
common
normally closed
L
_
K
_
J
_
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.