Watlow ez-zone pm - Communications Setup and Wiring

Watlow EZ-ZONE
®
PM Integrated Controller • 46 • Chapter 5 Operations Page
Operations Page
Display
Parameter name
Description
Range Default
Parameter
Appears in
Menu When
Modbus Rela-
tive Address
CIP
Class
Instance
Attribute
hex (dec)
Profibus
Index
Data
Type
&
Read/
Write
[`C;hy]
[ C.hy]
Loop (1 to 2)
Cool Hysteresis
Set the control
switching hysteresis
for on-off control.
This determines
how far into the “on”
region the process
value needs to move
before the output
turns on.
0.001to9,999.000°F
or units
-1,110.555 to
5,555.000°C
3.0°For
units
2.0°C
Cool Al-
gorithm
(Setup
Page) is set
to On-Off.
Instance 1
Map 1 Map 2
1902 2382
Instance 2
Map 1 Map 2
1972 2522
0x97 (151)
1 to 2
0xC (12)
68 float
RWES
[``ti]
[ ti]
Loop (1 to 2)
Time Integral
Set the PID integral
for the outputs.
0 to 9,999 seconds per
repeat
180.0
seconds
per re-
peat
Heat Al-
gorithm or
Cool Algo-
rithm (Set-
up Page) is
set to PID.
Instance 1
Map 1 Map 2
1894 2374
Instance 2
Map 1 Map 2
1964 2444
0x97 (151)
1 to 2
8
69 float
RWES
[``td]
[ td]
Loop (1 to 2)
Time Derivative
Set the PID deriva-
tive time for the out-
puts.
0 to 9,999 seconds 0.0
seconds
Heat Al-
gorithm or
Cool Algo-
rithm (Set-
up Page) is
set to PID.
Instance 1
Map 1 Map 2
1896 2376
Instance 2
Map 1 Map 2
1966 2446
0x97 (151)
1 to 2
9
70 float
RWES
[``dB]
[ db]
Loop (1 to 2)
Dead Band
Set the offset to the
proportional band.
With a negative
value, both heating
and cooling outputs
are active when
the process value is
near the set point. A
positive value keeps
heating and cooling
outputs from fighting
each other.
-1,000.0to1,000.0°F
or units
-556to556°C
0.0 Always Instance 1
Map 1 Map 2
1898 2378
Instance 2
Map 1 Map 2
1968 2448
0x97 (151)
1 to 2
0xA (10)
71 float
RWES
[`o;SP]
[ o.SP]
Loop (1 to 2)
Open Loop Set
Point
Set a fixed level of
output power when
in manual (open-loop)
mode.
-100 to 100% (heat
and cool)
0 to 100% (heat only)
-100 to 0% (cool only)
0.0 Always Instance 1
Map 1 Map 2
2162 2642
Instance 2
Map 1 Map 2
2242 2722
0x6B (107)
1 to 2
2
51 float
RWES
Note:
Some values will be rounded off to fit in the four-character display. Full values can be read with
other interfaces.
* Available with PM4, PM8 and PM9 models only
R: Read
W: Write
E: EE-
PROM
S: User
Set