TECO F33 Series, Instruction Manual, Page: 80 / 192

Functional Description 77
Communication information
11.2.7 Trip Autoreset/Trip Conditions
[250]
The benefit of this feature is that occasional trips that
do not affect the process will be automatically reset.
Only when the failure keeps on coming back, recurring
at defined times and therefore cannot be solved by the
VSD, will the unit give an alarm to inform the operator
that attention is required.
For all trip functions that can be activated by the user
you can select to control the motor down to zero speed
according to set deceleration ramp to avoid water ham-
mer.
Also see section 12.2, page 152.
Autoreset example:
In an application it is known that the main supply volt-
age sometimes disappears for a very short time, a so-
called “dip”. That will cause the VSD to trip an “Under-
voltage alarm”. Using the Autoreset function, this trip
will be acknowledged automatically.
• Enable the Autoreset function by making the reset
input continuously high.
• Activate the Autoreset function in the menu [251],
Number of trips.
• Select in menus [252] to [25N] the Trip condition
that are allowed to be automatically reset by the
Autoreset function after the set delay time has
expired.
Number of Trips [251]
Any number set above 0 activates the Autoreset. This
means that after a trip, the VSD will restart automati-
cally according to the number of attempts selected. No
restart attempts will take place unless all conditions
are normal.
If the Autoreset counter (not visible) contains more trips
than the selected number of attempts, the Autoreset
cycle will be interrupted. No Autoreset will then take
place.
If there are no trips for more than 10 minutes, the
Autoreset counter decreases by one.
If the maximum number of trips has been reached, the
trip message hour counter is marked with an “A”.
If the Autoreset is full then the VSD must be reset by a
normal Reset.
Example:
• Autoreset = 5
• Within 10 minutes 6 trips occur
• At the 6th trip there is no Autoreset, because the
Autoreset trip log contains 5 trips already.
•
To reset, apply a normal reset: set the reset input
high to low and high again to maintain the Autoreset
function. The counter is reset.
Communication information
Over temperature [252]
Delay time starts counting when the fault is gone.
When the time delay has elapsed, the alarm will be
reset if the function is active.
M1 11 Data from motor 1 is loaded.
M2 12 Data from motor 2 is loaded.
M3 13 Data from motor 3 is loaded.
M4 14 Data from motor 4 is loaded.
M1M2M3
M4
15 Data from motor 1, 2, 3 and 4 are loaded.
All 16 All data is loaded from the control panel.
Modbus Instance no/DeviceNet no: 43025
Profibus slot/index 168/184
Fieldbus format UInt
Modbus format UInt
NOTE: Loading from the control panel will not affect the
value in menu [310].
Default: 0 (no Autoreset)
Range: 0–10 attempts
Modbus Instance no/DeviceNet no: 43071
Profibus slot/index 168/230
Fieldbus format UInt
Modbus format UInt
NOTE: An auto reset is delayed by the remaining ramp
time.
Default: Off
Off 0 Off
1–3600 1–3600 1–3600 s
251 No of Trips
Stp 0
A
252 Overtemp
Stp Off
A