Watlow ez-zone pm - Page 38

Watlow EZ-ZONE
®
PMI Controller • 34 • 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 analog input 1, 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 T4A
Warning:
ç
Explosion Hazard - Dry contact
closure Digital Inputs shall not be
used in Class I Division 2 Hazard-
ous Locations unless switch used
is approved for this application.
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.
Input 1, 2 Process
-
+
S_
R_
volts
Slot A, B
-
+
T_
S_
amperes
Slot A, B
• 0 to 20mA @ 100Ω input impedance
• 0 to 10VÎ (dc) @ 20kΩ input imped-
ance
• 0 to 50mVÎ (dc) @ 20kΩ input im-
pedance
• Scalable
Input 1: PM _ [C,R,B
*
] _ _ _ - _ _ _ _ _
_ _ (-S1/+R1),(+T1/-S1)
Input 2: PM _ _ _ _ _ - _ [C,R,L] _ _ _
_ _ (-S2/+R2),(+T2/-S2)
*PM(4, 8 and 9) only
Input 1,2 Potentiometer
S_
R_
Slot A, B
CW
CCW
• Use a 1kΩ potentiometer.
Input 1: PM _ [C,R,B
*
] _ _ _ - _ _ _ _ _ _ _ (S1/
R1)
Input 2: PM _ _ _ _ _ - _ [C,R,L] _ _ _ _ _ (S2/
R2)
* PM(4, 8 and 9) only
Input 1, 2 Thermistor
S_
R_
Slot A, B
• >20MΩ input impedance
• 3µA open-sensor detection
Input 1: PM _ [J,N,E*] _ _ _ _-_ _ _ _ _ _ _ (S1/
R1)
Input 2: PM _ _ _ _ _ - _ [J,P,M] _ _ _ _ _ (S2/
R2)
* For input 1, option E is available with PM4, 8
and 9 models only.
Input 2 Current Transformer PM _ _ _ _ _ - _ [T] _ _ _ _ _
T2
S2
Slot B
• Input range is 0 to 50mA
• Current transformer part number: 16-0246
• 100Ω input impedance
• Response time: 1 second maximum
• Accuracy +/-1 mA typical