Setting Shutdown And Flywheel Timer Limits (Optional) - Honeywell SmartPAC 2 User Manual

SmartPAC 2 with WPC Integration

Setting Shutdown and Flywheel Timer Limits (Optional)

You can set these two optional features under "Press Control." They are "Shutdown Limit" and
"Flywheel Timer."
Description of Shutdown Limit
NOTICE
The Auto Compensated Top Stop ("ACTS") firmware option for WPC is required for
"Shutdown Limit" to function. ACTS is explained in the section "Switch 4 – Auto
Compensated Top Stop ("ACTS") Enabled (Optional)," page 244.
When the DSV is closed, the press is not actually running but the motor may still be on.
Therefore, you set a Shutdown Limit (in minutes, ranging from 0 to disable this limit to 100
minutes) at "Press Parameters" in SmartPAC Initialization. WPC keeps track of how long
the motor has been on while the press was not operating. If the DSV has not been re-
energized in that time frame, WPC stops the motor and flashes an error message (#F10) to let
you know. See Chapter 7 for details on this message. Note: The lockout relay must be
wired to the motor starter (see "Wiring the lockout relay" in Chapter 2).
Description of Flywheel Timer (Optional Hardware Required)
With Flywheel Timer, WPC prohibits starting the motor in the reverse direction or activating
the Bar mode while the flywheel is still turning. With this feature, WPC monitors the
flywheel movement. A flywheel speed sensor, including an LMCS and two magnets
mounted on the flywheel, detects approximately how long it takes for the flywheel to turn
one revolution. As the flywheel slows down, the amount of time it takes for one revolution
increases.
You set a Flywheel Timer (in seconds ranging from 0 to disable this limit up to 60 seconds)
at "Press Parameters" in SmartPAC Initialization to indicate the slowing down of the
flywheel sufficiently.
Here is an example of how it works: If your press is running at 60 SPM, the amount of time
that it takes for one revolution would be 1 second. As the press slows down to 3 SPM, this
time increases to 20 seconds. Therefore in this example, if you select "20 SEC" as your
Flywheel Timer, WPC will not allow you to reverse the motor or bar the press until the
flywheel has slowed down to less than 3 SPM. Similarly this limit also prevents you from
changing the motor from reverse to forward direction until the flywheel has slowed down
less than 3 SPM. Here is how you set Flywheel Timer and Shut Down Limit.
1. If you are not already there, get into SmartPAC's Initialization mode (Figure 4-1) and
select "Press Control." In the WPC Initialization menu that appears, select "Press
Parameters."
2. Use the cursor key to highlight "Shut Down Limit." Press ENTER to select it.
SmartPAC 2 Initialization Mode Chapter 4
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