Operating Instructions SYN 5201/SYN 5202
Document No Art Part Language Revision page
abb
ABB Switzerland Ltd
3BHS109762 E01
en D 46
Template: CHIND Techn doc stand, A4 P de, R1.DOT; Filename: 3BHS109762E01 D.doc; Print: 12/6/2011 5:48:00 PM; Save: 12/1/2011 2:37:00 PM; CHIND No. 3BHS109763 ZAB D14 Rev. -; I-Q
Minimum pulse time tp fmin
The minimum frequency adjusting pulse should be set as short as possible taking into
account the manufacturer‘s specifications for the final control element. Usual setting
value: tp fmin = 0.05 s.
Where the function INVERSE f is used, this parameter corresponds to the pulse
duration.
Switchover to variable intervals INVERSE f
If this parameter is set to ON, the following applies:
fixed pulse duration
variable interval depending on actual value, according to the formula:
)21(
1
ff
tsf
Settings recommendation for tp fmin if INVERSE f = ON: as high as possible, but so that
the matcher does not overshoot (see section 2.2.2 Frequency matcher with variable
intervals).
4.2.7 Parameter group General Parameters
Blocking time after selection t block
The adjustable parameter t block prevents a command being given between selection
and connection of the measuring voltages. The time t block does not expire if the
parameter set has not been selected or if another criterion for synchronization is not
fulfilled. If the parameter set is selected subsequently, t block is then started. The default
setting for t block is 2 seconds.
If t block is set too short, it is possible that the measuring voltages will not yet be stably
connected when the device is already “live“.This is indicated with a single flash of the
LED "U1/U2=0" after the start. In this case, the setting of t block has to be increased
until this flash does not occur anymore.
Total paralleling time t tot
As soon as the Start signal is activated, the monitoring of the total paralleling time t tot
starts to run. If this time is exceeded before the Stop signal is activated, the unfulfilled
paralleling conditions are written into the event logger at the time t tot.
If the device is used as a synchrocheck for manual synchronization, the setting t tot is
based on the maximum expected manual paralleling time.
Usual setting value: 5 min. If you wish to set the device to continuous operation or if
these messages are not required, t tot should be set to zero.
Caution
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