Wintriss SmartPAC 2, Руководство пользователя

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SmartPAC 2 with WPC 2000 Integration User Manual 1128600
Initialization Mode 4-31
Calculating the Stop-time Limit
The value you set as the Stop-time Limit on the Press Control Parameter Menu must factor in
the normal wear on your brake to prevent SmartPAC 2 from generating stop-time faults when
the stopping time increases only a little. The Stop-time Limit can be easily calculated based
on the actual stopping time of your press. To perform this calculation, do the following:
1.
Press RESET repeatedly until the Main Program Menu displays.
2.
Perform the
Determining the Stopping Time of Your Press
procedure in Run mode (see
page 6-21).
3.
Multiply the stopping time value you determined in step 2 by 0.20 (i.e., 20%) for a new
brake or 0.10 (i.e., 10%) for an old brake, and add the result to the stopping-time value.
This is your Stop-time Limit.
Example 1
Your recorded stopping time is 207 mS and your brake is old. Take 10% of 207 (i.e., 0.10 x 207
= 20.7, rounded to 21) and add the result to 207 (i.e., 21 + 207 = 228). Your calculated
Stop-time Limit is 228 mS.
Example 2
Your recorded stopping time is 175 mS and your brake is new. Take 20% of 175 (i.e., 0.20 x
175 = 35) and add the result to 175 (i.e., 35 + 175 = 210). Your calculated Stop-time Limit is
210 mS.
Setting the Start-time Limit
The starting time of your press is the time it takes for the crankshaft to start turning after the
DSV has been energized. More specifically, it is the interval between the closing (turning on)
of the output relays on the DSV/Lockout Relay board, which provides the signal for the Dual
Safety Valve (DSV) to energize, and the resolver signal, which indicates that the crankshaft
has begun to turn. The greater part of this interval is the time it takes for the clutch
mechanism to activate and engage.
Whenever the start time exceeds the Start-time Limit you set on the Press Control Parameter
Menu, SmartPAC 2 displays an F79 (Loss of Rotation) fault on the SmartPAC 2 LCD (see
ADD 10% FOR OLD BRAKES, 20% FOR NEW BRAKES
The rule of thumb for calculating the Stop-time Limit is to add 20% of the stopping time to
your press’s stopping time if your brakes are new, 10% if your brakes are old. Since
stopping time increases as the brake wears, the calculated Stop-time Limit should be
roughly the same for both new and old brakes.
The Stop-time Limit must be at least 10 mS greater than the stopping time. Otherwise,
normal operation of press will cause the Brake Warning LED to flash.
NOTICE
NOTICE