Watlow ez-zone pm - Page 41

Watlow EZ-ZONE
®
PMI Controller • 37 • Chapter 2 Install and Wire
Warning:
ç
Use National Electric (NEC) or
other country-specific standard
wiring and safety practices when
wiring and connecting this con-
troller 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)
• 0.56 Nm (5.0 in-lb.) torque
Note:
Adjacent terminals may be la-
beled differently, depending on
the model number
.
Note:
To prevent damage to the con-
troller, do not connect wires to
unused terminals.
Note:
Maintain electrical isolation
between digital input-outputs,
switched dc/open collector
outputs and process outputs to
prevent ground loops.
Note:
This equipment is suitable for
use in CLASS I, DIVISION 2,
Groups A, B, C and D or Non-
Hazardous locations only. Tem-
perature Code T4
Warning:
ç
Explosion Hazard – Substitution
of component may impair suit-
ability for CLASS I, DIVISION 2.
Warning:
ç
Explosion Hazard - Do not dis-
connect while the circuit is live
or unless the area is known to be
free of ignitable concentrations
of flammable substances.
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. suppressor.
Switched DC Wiring Example Using DO 5-6
VDC
switched dc outputs
Internal Circuitry
+
+
-
-
DC80-60C0-0000
Htr 2
Htr 1
D5
D6
B5
Digital Output 7 - 12 PM [4,6,8] _ _ _ _- [C,D] _ _ _ _ _ _
Common
Collector out
Collector out
B7
D7
D8
D9
D10
D11
D12
Z7
Slot D
Collector out
Collector out
Collector out
Collector out
Internal Supply
• Internal sup-
ply limited to
400mA, maxi-
mum open cir-
cuit voltage of
25VÎ (dc), typi-
cal 8VÎ (dc) at
80mA.
• Maximum out-
put sink current
per output is
1.5A (external
class 2 or *SELV
supply required)
• Total sink cur-
rent for all out-
puts not to ex-
ceed 8A
• Do not connect
outputs in par-
allel
* Saftey Extra Low
Voltage
Open Collector Outputs
Common
Internal Supply
D7
B7
D8
D9
D10
D11
D12
Z7
Internal Circuitry
VDC