Watlow EZ-ZONE
®
PM PID Controller
•
13
•
Chapter 2 Install and Wire
Digital Inputs & Outputs
5-6
Switched DC, Open Collector,
Process outputs
Analog Input 1
Communications Ports
Low Voltage Power Bus
& Internal Bus
Mechanical Relay,
Solid-State Relay,
NO-ARC Relay
Outputs
Low-voltage Isolation: 42V peak
Safety Isolation: 2300V
Å
(ac)
Safety Isolation
No Isolation
No Isolation
No Isolation
Low-voltage
Isolation
Controller Power Supply
12 to 40V
Î
(
dc)
20 to 28V
Å
(ac)
100 to 240V
Å
(ac)
Safety Isolation
Safety Isolation
EZ-ZONE PM Isolation Blocks
C
Dig I/O 5 & 6
485 Comms
Power
E
A
Output 2
Output 1
Input 1
B
D
Back View
Slot Orientation
1/8
DIN Vertical
PM8
A
Output 2
Output 1
Input 1
B
D
E
C
Dig I/O 5 & 6
485 Comms
Power
Back View
Slot Orientation
1/8 DIN Horizontal
PM9
A
Output 2
Output 1
Input 1
C
Dig I/O 5 & 6
485 Comms
Power
Back View
Slot Orientation
1/4 DIN Horizontal
PM4