Watlow EZ-ZONE ST - Manual (Page 36)

Watlow EZ-ZONE ® ST • 34 • Chapter 3 Operations Page
Operations Page
Display
Parameter Name
Description
Range Default
Modbus
Relative Ad-
dress
CIP
Class
Instance
Attribute
hex (dec)
Pro DP
Index
Par
ID
RUI/
GTW
Mod-
bus
Data
Type
& Read/
Write
[`h;Pb]
[ h.Pb] Control Loop (1)
Heat Proportional Band
Set the PID proportional
band for the heat outputs.
0.001 to 9,999.000°F or
units
-1,110.555 to
5,555.000°C
25.0°F
or
units
14.0°C
Instance 1
Map 1 Map 2
232 1760
0x97
(151)
1
6
65 8009 Inst. 1
1896
float
RWES
[`h;hy]
[ h.hy] Control Loop (1)
Heat Hysteresis
Set the control switching
hysteresis for on-off control.
This determines how far
into the “on” region the pro-
cess 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
Instance 1
Map 1 Map 2
234 1770
0x97
(151)
1
0xB (11)
66 8010 Inst. 1
1898
float
RWES
[`C;Pb]
[ C.Pb] Control Loop (1)
Cool Proportional Band
Set the PID proportional
band for the cool outputs.
0.001 to 9,999.000°F or
units
-1,110.555 to
5,555.000°C
25.0°F
or
units
14.0°C
Instance 1
Map 1 Map 2
238 1762
0x97
(151)
1
7
67 8012 Inst. 1
1902
float
RWES
[`C;hy]
[ C.hy] Control Loop (1)
Cool Hysteresis
Set the control switching
hysteresis for on-off control.
This determines how far
into the “on” region the pro-
cess 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
Instance 1
Map 1 Map 2
240 1772
0x97
(151)
1
0xC (12)
68 8013 Inst. 1
1904
float
RWES
[``ti]
[ ti] Control Loop (1)
Time Integral
Set the PID integral for the
outputs.
0 to 9,999 seconds per
repeat
180.0
seconds
per re-
peat
Instance 1
Map 1 Map 2
226 1764
0x97
(151)
1
8
69 8006 Inst. 1
1890
float
RWES
[``td]
[ td] Control Loop (1)
Time Derivative
Set the PID derivative time
for the outputs.
0 to 9,999 seconds 0.0
seconds
Instance 1
Map 1 Map 2
228 1766
0x97
(151)
1
9
70 8007 Inst. 1
1892
float
RWES
[``dB]
[ db] Control Loop (1)
Dead Band
Set the offset to the propor-
tional band. With a nega-
tive value, both heating and
cooling outputs are active
when the process value is
near the set point. A posi-
tive 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 Instance 1
Map 1 Map 2
230 1768
0x97
(151)
1
0xA (10)
71 8008 Inst. 1
1894
float
RWES
[`o;SP]
[ o.SP] Control Loop (1)
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 Instance 1
Map 1 Map 2
23 1892
0x6B
(107)
1
2
51 7002 Inst. 1
- - - -
float
RWES
No Dis-
play
Control Loop (1)
Loop Error
Open Loop detect deviation
has been exceeded.
None (61)
Open Loop (1274)
Reversed Sensor (1275) - - - - Instance 1
Map 1 Map 2
- - - - 1798
0x6C (108)
1
0x30 (48)
- - - - 8048 Inst. 1
- - - -
uint
R
No Dis-
play
Control Loop (1)
Clear Loop Error
Current state of limit out-
put.
Clear (129)
Ignore (204) - - - - Instance 1
Map 1 Map 2
- - - - 1800
0x6C (108)
1
0x31 (49)
- - - - 8049 Inst. 1
- - - -
uint
W
Note:
Some values will be rounded off to fit in the four-character display . Full values can be
read with other interfaces .
If there is only one instance of a menu, no submenus will appear .
R: Read
W: Write
E: EE-
PROM
S: User
Set