Watlow EZ-ZONE
®
PM PID Controller
•
36
•
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
[``dB]
[ db]
Loop (1)
Dead Band
Set the offset to the
proportional band.
With a negative val-
ue, both heating and
cooling outputs are
active when the pro-
cess 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
0x97 (151)
1
0xA (10)
71
float
RWES
[`o;SP]
[ o.SP]
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
Always
Instance 1
Map 1
Map 2
2162
2642
0x6B (107)
1
2
51
float
RWES
[ALM]
[oPEr]
Alarm Menu
[`A;Lo]
[ A.Lo]
Alarm (1 to 4)
Low Set Point
If Alarm Type (Setup
Page, Alarm Menu) is
set to:
process
- set the pro-
cess value that will
trigger a low alarm.
deviation
- set the
span of units from
the closed loop set
point that will trig-
ger a low alarm. A
negative set point
represents a value
below closed loop set
point. A positive set
point represents a
value above closed
loop set point.
-1,999.000 to
9,999.000°F or units
-1,128.000 to
5,537.000°C
32.0°F
or
units
0.0°C
Alarm
Sides (Set-
up Page) is
not set to
High.
Instance 1
Map 1
Map 2
1482
1882
Offset to next
instance (
Map
1
) 50
Offset to next
instance (
Map
2
) 60
0x6D
(109)
1 to 4
2
18
float
RWES
[`A;hi]
[ A.hi]
Alarm (1 to 4)
High Set Point
If Alarm Type (Setup
Page, Alarm Menu) is
set to:
process
- set the pro-
cess value that will
trigger a high alarm.
deviation
- set the
span of units from
the closed loop set
point that will trig-
ger a high alarm.
-1,999.000 to
9,999.000°F or units
-1,128.000 to
5,537.000°C
300.0°F
or
units
150.0°C
Alarm
Sides (Set-
up Page) is
not set to
Low.
Instance 1
Map 1
Map 2
1480
1880
Offset to next
instance (
Map
1
) 50
Offset to next
instance (
Map
2
) 60
0x6D
(109)
1 to 4
1
19
float
RWES
Note:
Some values will be rounded off to fit in the four-character display. Full values can be read with
other inter-
faces.
*
Available with PM4, PM8 and PM9 models only
R: Read
W: Write
E: EEPROM
S: User
Set
