Watlow Electric Integrated Controller User Manual Rev C EZ-ZONE PM - Manual (Page 21)

Wa t l o w E Z - Z O N E ® P M I n t e g r a t e d C o n t r o l l e r • 1 9 • C h a p t e r 2 I n s t a l l a n d W i r e
Ó
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 mm2 (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.
Output 2 Solid-state Relay, Form A
common
normally open
L1
K1
J1
L2
K2
T1
S1
R1
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.
PM6 _ _ _ K-_ _ _ _ A _ _
Internal Circuitry
common
normally
open
Solid-state Relay
L2
K2
Output 3 Switched DC/Open Collector
dc +
common
X3
W3
Y3
L4
K4
T2
S2
R2
Slot B
dc - (open collector)
Switched DC
• 30 mA dc maximum supply
current
• short circuit limited to <50 mA
• 22 to 32V
Î (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
• 30V Î (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.
See Quencharc note.
PM6 _ _ _ _-_ _ C _ A _ _
Internal
Circuitry
dc-
dc+
Load
Switched DC
-
+
W3
Y3
Power
Supply
- +
Internal
Circuitry
dc-
common
dc+
Open
Collector
W3
X3
Load
-
+
Output 3 Mechanical Relay, Form C
normally open
normally closed
common
L3
K3
J3
L4
K4
T2
S2
R2
Slot B
• 5 A at 240V Å (ac) or 30VÎ (dc)
maximum resistive load
• 20 mA at 24V minimum load
• 125 VA pilot duty at 120/240V
Å
(ac), 25 VA at 24V Å (ac)
• 100,000 cycles at rated load
• Output does not supply power.
• for use with ac or dc
See Quencharc note.
PM6 _ _ _ _-_ _ E _ A _ _
Internal
Circuitry
common
normally
open
Mechanical
Relay
L3
K3
normally
closed
J3
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.