UM0527
General description
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1.2.3 System
architecture
1.2.4 Main
loop
●
The UPS works in 7 modes:
–
Inverter mode - if the mains voltage is lower than 167 VAC RMS(87 for US
version) or higher than 286 VAC RMS(153 for US version) the inverter is switched
on. At outputs INV_B and INV_A, a PWM signal 50 Hz (60 for US version) with
40% or less duty cycles (depends on DC/DC output voltage) is generated. In
inverter mode the ACF signal is switched on. If the mains voltage returns to the
correct value (167 - 286 VAC or 87 - 153 VAC for US version), the PWM signal is
SDA
Shutdown type: 0 – output, 1 - system
ST1
Battery condition (0 – good, 1 – weak, 2 - replace), battery status (0 –
normal, 1 – low, 2 - depleted), battery voltage (V/10), battery current (A/10)
ST2
Input num lines (1), mains frequency (Hz/10), mains voltage (V/10)
ST3
Output source (0 – normal, 1 – on battery, 3 – reducing, 4 – boosting, 5 –
out off), output voltage (V/10), output current (A/10), output power (W)
STR
Test result summary (1 – passed, 2 – in progress, 4 – battery test fail)
AP1
“10,16,17,18,19,20,22,24,43”
AP2
“51,58,59,60,61,62,63,64,65,68,73,76,77,80,82,83,84,85,87”
VER
“V 1-0-0-0 w”
Table 9.
Set commands
Query (3 characters)
Response (values separated by commas)
ATR
Auto restart: 0 - disabled or 1 - enabled
SDA
Shutdown type: 0 – output, 1 - system
PSD
Shutdown after delay (if parameter > 0: second to shutdown, if parameter =
-1: cancel shutdown)
RWD
Reboot with duration (parameter – seconds to startup after shutdown)
STD
Startup after delay (parameter – seconds to startup)
TST
Battery test: 1 – test or -1 – cancel test
Table 10.
Additionally UPS support order not defined in SEC protocol
Query (3 chars)
Response (values separated by commas)
ASH
Auto shutdown: 0 – disabled, 1 – enabled or poll. UPS is shut down when output
current is less than or equal to 100 mA.
Table 8.
Poll commands
Query (3 characters)
Response (values separated by commas)
