Watlow PM LEGACY PM3 - Page 18

Watlow PM LEGACY
™
Limit Controller • 18 • Chapter 2 Install and Wire
Slot Orientation - Back View
1/32 DIN Horizontal PM3 1/16 DIN Vertical PM6
Note: Slot B above can also be configured with a communications card.
C
A
Power
485 Comms
Dig I/O 5 & 6
Output 1Output 2
Input 1
C
Dig I/O 5 & 6
485 Comms
Power
A
Output 2
Output 1
Input 1
B
Output 3
Output 4
PM Isolation Block
Digital Inputs & Outputs
5-6
Switched DC, Open Collector,
Process outputs
Analog Input 1
Communications Ports
Controller
Low Voltage Power Bus
Mechanical Relay,
Solid-State Relay
Outputs
Low-voltage Isolation: 42V peak
Safety Isolation: 2300V (ac)
Safety Isolation
No Isolation
Low-voltage
Isolation
No Isolation
Low-voltage
Isolation
Controller Power Supply
12 to 40V (dc)
20 to 28V (ac)
100 to 240V (ac)
Safety Isolation
Safety Isolation