Changing pm limit model number to pm express limit – Watlow EZ-ZONE PM User Manual
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Watlow EZ-ZONE
®
PM Limit Controller
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72
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Chapter 8 Features
Changing PM Limit Model Number to PM Express Limit
EZ-ZONE PM Limit firmware revisions of 13 and above allow the user to switch between a PM Limit control
to a PM Express Limit. Switching to a PM Express Limit eliminates the complexity of the PM Limit control
by allowing the user to operate with a simplified menu structure.
Note:
When switching from a Limit control to an Express version, optional PM hardware (even though installed)
and firmware features not available in a PM Express will no longer work. To see exactly what is impacted
by this change, compare the chart below to the ordering information page in this document.
How to Change the Control Model Number to a PM Express
1. Enter Factory Page [FCty] , Calibration Menu [`CAL] via front panel or using EZ-ZONE Configurator
Software.
2. Once there, using the green advance button navigate to the Part Number [``Pn] prompt (lower display).
The upper display will show factory [fCtY] indicating the factory model number as shown on the side of
the control is currently in effect.
3. Push the green advance button one more time where the Public Key [Code] prompt will be displayed in
the lower display and the number [4999] in the upper display.
4. Using the up or down arrow keys enter 2501 and push the green advance button to execute the change.
Note:
As noted above, when switching from an integrated control to an Express version, optional hardware (even
though installed) may no longer work. Also, all settings will be defaulted to that of a PM Express and a re-
set will occur when switched. If switching from a PM Express back to the PM Limit standard or enhanced,
a reset will occur with all settings defaulted as shown in this document for the model as shipped from the
factory.
Note:
After switching the model number to a PM Express this document will no longer apply to the control. Click
on the link that follows to acquire the latest version of the PM PID Express User's Guide.
Once there, simply enter express in the "Keyword" field to find the appropriate document.
PM _ _ _ _ -
EZ-ZONE® Limit Controller
Changes to PM Limit Express
Red-green 7-segment displays
Package Size
No Change
Primary Function
No Change
Power Supply
1
100 to 240VÅ (ac)
2
Changes to 1
3
15 to 36VÎ (dc) and 24VÅ (ac)
4
Changes to 3
Output 1 and 2 Hardware Options
AJ
CJ
EJ
Communications Options
None
- Standard Bus EIA-485 always included - all models
Future Options
None
Output 3 and 4 Hardware Options
Changes to None
Isolated Input Option
B
Changes to Express
Custom Options
AA
Standard EZ-ZONE face plate
No Changes
L
B
A
A
A
A
A
A