Gamatronic power+ sa - Table 12: Interpreting the Static Switch Transfer Code (LOADBP)

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
POWER
+
SA: 20, 30 and 40 kVA, Release 2.1
69
Data – dc voltage between + and – terminals for all events except LOADBP and STSW
status for LOADBP events. (See below.)
Even start (IN) and end (OUT)
Description – (See Table 11 above)
Event number – 0 through 255, 255 being the most recent
Example:
11:23:56 10.01.28 865 IN -> E.P.O. 254
This message means that at 11:23:56 on January 28
th
2010, Emergency Power Off alarm
was registered as event 254; dc voltage at the time was 865 V being a sum of (V+ -N) and
(V- -N).
Table 12: Interpreting the Static Switch transfer code (LOADBP)
The STSW transfer code, given as a decimal, is the sum of the eight components listed in this table.
Each component has its own weight if detected, and a weight of zero if not detected.
COMPONENT
WEIGHT
CONDITION DESCRIPTION
1
Inverter voltage blackout for >3 ms.
2
Inverter peak voltage low (brownout) (<185 V for 3x400 V, <92.5 V for 3x208 V).
4
Inverter peak voltage high (>400 V for 3x400 V, >200 V for 3x208 V).
8
Frequency beyond limits (45-65 Hz).
16
Inverter average voltage low (<185 V for 3x400 V, <92.5 V for 3x208 V).
32
Inverter average voltage high (>260 V for 3x400 V, >130 V for 3x208 V)..
64
Load transfer command received from the controller (not manual).
128
Load transfer command received from the Static Switch (manual key press).
Example: If LOADBP data = 67 = (64+2+1), this means that three conditions were present:
• (64) Instruction to transfer the load was issued by the controller.
• (2) Low peak voltage detected.
• (1) Voltage blackout encountered.