Watlow PM PLUS 6 - Isolation Block Diagram

Watlow PM PLUS™ 6 • 20 • Chapter 2: Installation
Wiring Notes
Maximum wire size termi-
nation and torque rating:
0.0507 to 3.30 mm2 (30
to 12 AWG) single-wire
termination or two 1.31
mm2 (16 AWG)
0.56 Nm (5.0 in-lb.)
torque
Adjacent terminals may
be labeled differently
depending on the model
number.
Do not connect wires to
unused terminals.
Maintain electrical isola-
tion between analog
input 1, digital input-
outputs, switched dc/
open collector outputs
and process outputs to
prevent ground loops.
This equipment is suit-
able for use in CLASS
I, DIVISION 2, Groups
A, B, C and D or Non-
Hazardous locations only.
Temperature Code T4A
Wiring Warnings
ç
Use National Electric
(NEC) or other country-
specic standard wiring
and safety practices
when wiring this control-
ler to a power source,
electrical sensors or pe-
ripheral devices. Failure
to do so may result in
damage to equipment
and property, and/or in-
jury or loss of life.
Explosion Hazard - Dry
contact closure Digital
Inputs shall not be used
in Class I Division 2 Haz-
ardous Locations unless
switch used is approved
for this application.
Explosion Hazard – Sub-
stitution of component
may impair suitability for
CLASS I, DIVISION 2.
Explosion Hazard - Do
not disconnect while the
circuit is live or unless
the area is known to be
free of ignitable concen-
trations of ammable
substances.
Low Power
PM_ _ [3,4] _ _ - _ _ _ _ _ _ _
Power
power
power
98
99
CF
CD
CE
B5
D6
D5
Slot C
fuse
• Minimum/Maximum Ratings
• 12 to 40VDC
• 20 to 28VAC) Semi Sig F47
• 47 to 63 Hz
• 10VA maximum power consumption
High Power
PM_ _ [1,2] _ _ - _ _ _ _ _ _ _
Power
power
power
98
99
CF
CD
CE
B5
D6
D5
Slot C
fuse
• Minimum/Maximum Ratings
• 85 to 264VAC
• 100 to 240VAC Semi Sig F47
• 47 to 63 Hz
• 10VA maximum power consumption
Isolation Block Diagram
Digital Inputs & Outputs
5-12
Switched DC, Open Collector,
Process outputs
Analog Input 1
Analog Input 2
Communications Ports
Controller
Low Voltage Power Bus
Mechanical Relay,
Solid-State Relay,
NO-ARC Relay
Outputs
Low-voltage Isolation: 42V peak
Safety Isolation: 2300VAC
Safety Isolation
No Isolation
Low Voltage
Isolation
No Isolation
Low-voltage
Isolation
Low-voltage
Isolation
Controller Power Supply
12 to 40VDC
20 to 28VAC
100 to 240VAC
Safety Isolation
Safety Isolation