Watlow EZ-ZONE PM - Manual (Page 35)

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.
Watlow EZ-ZONE ® PM Limit Controller • 32 • Chapter 2 Install and Wire
Connecting a Computer to PM Controls Using B&B 485 to USB Converter
USB
Port
EZ-ZONE ® PM
to B&B Converter
Model ULINX 485USBTB-2W
USB to RS-485 Adapter
using Standard Bus
TM
PM6_ _ _ _-A_ _ _A_ _ PM6_ _ _ _-A_ _ _A_ _
Ou
tpu
t 1
Ou
tpu
t 1
Ou
tpu
t 2
Ou
tpu
t 2
Inp
ut 1
Inp
ut 1
Ou
tpu
t 3
Ou
tpu
t 3
Ou
tpu
t 4
Ou
tpu
t 4
Inp
ut 2
Inp
ut 2
D I/O
5 &6
D I/O
5 &6
48 5 Co
m m s
48 5 Co
m m s
Po
we
r
Po we
r
CF CF
CD CD
CE CE
Slo
t A
Slo
t A
Slo
t B
Slo
t B
Slo
t C
Slo
t C
A A C C B B
Address 1 Address 2
Use twisted pair wires such as Cat 5 cabling.
Do not route with power carrying conductors.
Daisy chain wire up to 16 EZ-ZONE devices. Æ
http://www.bb-elec.com/
LINX
Model 485TB-2W
US
B
A(-)
A(-)
B(+)
B(+)
GND B B electronics &
TM U
USB Serial Conversion
PC Software Protocol - Standard Bus
EZ Configurator
Data format
38,400 baud
8 data bits
no parity
1 start bit
1 stop bit
0847-0326-0000
Æ
RESET
L
I
M
I
T
L
I
M
I
T
PM6 [L,M] _ _ _ _ - A A _ _ A A A PM6 [L,M] _ _ _ _ - A A _ _ A A A
WATLOW WATLOW EZ-ZONE TM EZ-ZONE TM
RESET
Note:
Do not leave a USB to EIA-485 converter connected to Standard Bus without
power (i.e., disconnecting the USB end from the computer while leaving the
converter connected on Standard Bus). Disturbance on the Standard Bus
may occur.
Note:
When connecting the USB converter to the PC it is suggested that the La-
tency Timer be changed from the default of 16 msec to 1 msec. Failure to
make this change may cause communication loss between the PC running
EZ-ZONE Configurator software and the control.
To modify Latency Timer settings follow the steps below:
1. Navigate to Device Manager.
2. Double click on Ports.
3. Right click on the USB serial port in use and select Properties.
4. Click the tab labeled Port settings and then click the Advance button.