Watlow EZ-ZONE PM - Manual (Page 30)

Watlow EZ-ZONE ® PM Limit Controller • 27 • Chapter 2 Install and Wire
Warning:
Óç
Use National Electric (NEC) or other
country-specific standard wiring and
safety practices when wiring and
connecting this controller 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)
• 0.8 Nm (7.0 lb.-in.) torque
Note:
Adjacent terminals may be labeled
differently, depending on the model
number.
Note:
To prevent damage to the control-
ler, do not connect wires to unused
terminals.
Note:
Maintain electrical isolation be-
tween Analog Input 1, Digital I/O,
Switched dc/open collector outputs
and Process outputs to prevent
ground loops.
Note:
The control output common
terminal and the digital common
terminal are referenced to different
voltages and must remain isolated.
EIA-232/485 Modbus RTU Communications
485 common
485 T-/R-
CB
CA
CC
CB
CA
C5
C3
C2
Slot B or E
485 T+/R+
485 T-/R-
485 T+/R+
232 common
232 (TX) to DB9 pin 2 (RD)
232 (RD) to DB9 pin 3 (TX)
• Wire T-/R- to the A termi-
nal of the EIA-485 port.
• Wire T+/R+ to the B
terminal of the EIA-485
port.
• Wire common to the com-
mon terminal of the EIA-
485 port.
• Do not route network
wires with power wires.
Connect network wires in
daisy-chain fashion when
connecting multiple de-
vices in a network.
• A termination resistor
may be required. Place
a 120 Ω resistor across
T+/R+ and T-/R- of last
controller on network.
• Do not wire to both the
EIA-485 and the EIA-232
pins at the same time.
• Two EIA-485 terminals of
T/R are provided to assist
in daisy-chain wiring.
• Do not connect more
than one EZ-ZONE PM
controller on an EIA-232
network.
• Do not connect more than
16 EZ-ZONE PM control-
lers on a Standard Bus
EIA-485 network.
• Do not connect more
than 247 EZ-ZONE PM
controllers on a Modbus
RTU EIA-485 network.
• maximum EIA-232 net-
work length: 15 meters
(50 feet)
• maximum EIA-485 net-
work length: 1,200 me-
ters (4,000 feet)
• 1/8th unit load on EIA-
485 bus.
PM [4, 6, 8, 9] _ _ _ _-[2]
AAA AAA
Modbus-IDA Terminal EIA/TIA-485 Name Watlow Terminal Label Function
DO A CA or CD T-/R-
D1 B CB or CE T+/R+
common common CC or CF common
EtherNet/IP™ and Modbus TCP Communications
receive -
unused E8
E7
E6
E5
E4
E3
E2
E1
Slot B or E
unused
unused
unused
receive +
transmit -
transmit +
RJ-45
pin
T568B wire
color
Signal Slot
B or E
8 brown unused E8
7 brown & white unused E7
6 green receive - E6
5 white & blue unused E5
4 blue unused E4
3 white & green receive + E3
2 orange transmit - E2
1 white & orange transmit + E1
EtherNet/IP™ and Modbus TCP communi-
cations to connect with a 10/100 switch.
• Do not route net-
work wires with
power wires.
• Connect one Ether-
net cable per con-
troller to a 10/100
mbps ethernet
switch. Both Modbus
TCP and EtherNet/
IP™ are available
on the network.
• An RUI may be con-
nected at the same
time using Slot C.
PM [4, 6, 8, 9]_ _ _ _
_-[3] _ _ _ AAA
Note:
When changing the fixed IP address cycle module power for new address to
take effect
Ethernet LED Indicators
Viewing the control from the front and then looking on top four LEDs can be
seen aligned vertically front to back. The LEDs are identified accordingly:
closest to the front reflects the Network (Net) Status, Module (Mod) Status is
next, Activity status follows and lastly, the LED closest to the rear of the con-
trol reflects the Link status.
Note:
When using Modbus TCP, the Network Status and Module Status LEDs are
not used.