Watlow ez-zone pm - Page 36

Watlow EZ-ZONE
®
PMI Controller • 32 • 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.
Digital Input 7 - 12 PM [4,8,9] _ _ _ _- [C,D] _ _ _ _ _ _
Common
DC Input
B7
D7
D8
D9
D10
D11
D12
Z7
Slot E
Internal Supply
DC Input
DC Input
DC Input
DC Input
DC Input
Digital Input Event
Conditions
• Dry Contact
- Input inactive when
> 100kΩ
- Input active when <
50Ω
• Voltage
- Input inactive when
< 2V
- Input active when
> 3V
• Six user configurable
digital inputs/outputs
per slot
- Slot E DIO 7-12
Voltage Input
common
Vdc
B
_
D
_
Dry Contact
D
_
_
24 Vdc
Z
Connecting a Digital Output from Zone 2 to a Digital Input of Zone 1
In the example above, digital output D8 from Zone 2 is connected
to digital input D8 of Zone 1, congured as a Voltage Input.
Note:
As shown in the graphic above, for this configuration, a pull-up
resistor is required.
C
Dig I/O 5 & 6
485 Comms
Power
E
A
Output 2
Output 1
Input 1
B
Output 3
Output 4
Input 2
D
Digital I/O 7 - 12
B7
D7
D8
D9
D10
D11
D12
Z7
Digital Input
Pull-up resistor
required 1K
to 10K Ohms
C
Dig I/O 5 & 6
485 Comms
Power
E
A
B
D
Digital I/O 7 - 12
B7
D7
D8
D9
D10
D11
D12
Z7
Digital Output
PM8 - Zone 1 PM8 - Zone 2