Instruction Manual

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.