RPS, Technical information, IT-HIST-MST 125/160/200 kVA DSP-023.
--------------------------------------------------------------------------------
Subject: Firmware history for systems MST 125/160/200 kVA.
M. Ghirelli, Date: 17/10/22
--------------------------------------------------------------------------------
Modification category:
N=new feature
I=improvement
B=bug fix
T=technical
C=Critical Bug Fix

--------------------------------------------------------------------------------
FW023-0335: Tt6_0335.out    [17/10/22] CRC32:[C0BF1F68] 3Ph/Standard production
FW023-0335: Tt6_0335.ehx    [17/10/22] CRC32:[C2778355] 3Ph/Standard production

C   - Official release refactored related to previous critical bug fix 
      (FW023-0334).

--------------------------------------------------------------------------------
FW023-0334: Tt6_0334.out    [03/10/22] CRC32:[2E0DC3B2] 3Ph/Standard production
FW023-0334: Tt6_0334.ehx    [03/10/22] CRC32:[A32AA44E] 3Ph/Standard production

C   - Fixed bug related to sporadic DSP reset (causing a bypass call) when the
      bypass line is affected by strong disturbances.
      The cause is a combination of the disturbances (emphasized when the source
      is a generator) and the detection of the signal for the synchronization.
      The effect is wrong watchdog violation error that causes the reset of the DSP.
      Affected UPSs: MST 125kVA

--------------------------------------------------------------------------------
FW023-0333: Tt6_0333.out    [02/11/20] CRC32:[F38EF6C2] 3Ph/Standard production
FW023-0333: Tt6_0333.ehx    [02/11/20] CRC32:[0B44DF0F] 3Ph/Standard production

I   - Improved the behavior of UPS in parallel: reduced power exchange between
      UPS (for MST 200kVA).

B   - Fixed bug related to the inverter output voltage ramp execution after a
      fast commutation from bypass to inverter due to bypass bad.

--------------------------------------------------------------------------------
FW023-0332: Tt6_0332.out    [13/12/19] CRC32:[2861C27C] 3Ph/Standard production
FW023-0332: Tt6_0332.ehx    [13/12/19] CRC32:[9A94B5AA] 3Ph/Standard production

C   - Fixed Bug related to the shut-down synchronized commands in a parallel
      system. In very rare circumstances slave UPSs could receive an inconsistent
      abnormal shutdown command.
      
--------------------------------------------------------------------------------
FW023-0331: Tt6_0331.out    [13/02/18] CRC32:[5202AA7D] 3Ph/Standard production
FW023-0331: Tt6_0331.ehx    [13/02/18] CRC32:[A1F9377D] 3Ph/Standard production

B   - Fixed bug related to the setting of selectable ramp time  (up to 125 s) 
      of inrush current during the commutation from battery working to on-line 
      working.

I   - Reduced waiting time before the opening of the input relays when  power 
      grid go down. This is achieved unlocking the input voltages measurement
      in this particular circumstance (mains grid absence).

I   - Improved output capacitor integrity check during inverter soft start.

I   - Improved input current stability under critical input impedance condiction.

--------------------------------------------------------------------------------
FW023-0330: Tt6_0330.out    [07/03/16] CRC32:[AD8B4628] 3Ph/Standard production
FW023-0330: Tt6_0330.ehx    [07/03/16] CRC32:[C66B95C8] 3Ph/Standard production

B   - Fixed error on the least significative bit of active power received on 
      CAN communication channel.

I   - Filtered Iout measurement (Vinv3 measure is affected of noise). 

I   - Filtered digital signal LINK (10 ms) and PGOOD (2 ms).

I   - Rised from 500 to 1000 us the default delay time of the inverter 
      mask for bypass call.

I   - Improved soft start DC bus charge in unbalaced bus voltage condition.

T   - Disable check on the slave reference discontinuity.

T   - Add new feutere for rigenerative active/reactive load.


--------------------------------------------------------------------------------
FW023-0221: Tt6_0221.out    [05/05/15] CRC32:[2EA7189F] 3Ph/Standard production
FW023-0221: Tt6_0221.ehx    [05/05/15] CRC32:[24D4E32A] 3Ph/Standard production

B   - Fixed bug related to Inverter Masks for bypass intervention.

I   - Measure reset when output power is very low.

N   - First release for MST 125 kVA.


--------------------------------------------------------------------------------
FW023-0220: Tt6_0220.out    [18/02/15] CRC32:[CAB8D14E] 3Ph/Standard production
FW023-0220: Tt6_0220.ehx    [18/02/15] CRC32:[D25C1949] 3Ph/Standard production

B   - Fixed management of the output current when UPS is latched on bypass. 
      Before this fix during a bypass latch condition and an AUX power failure, 
      the UPS could see an overload.

N   - Setted parameters for MST 160 kVA stand alone.


--------------------------------------------------------------------------------
FW023-0219: Tt6_0219.out    [27/01/15] CRC32:[068AF10B] 3Ph/Standard production
FW023-0219: Tt6_0219.ehx    [27/01/15] CRC32:[493D837F] 3Ph/Standard production

I   - Improved logic related to management of islands formation in a parallel
      system.

T   - Improved logic related to change of working frequency at fly.

T   - Improved energy calculation in abnormal condition.



--------------------------------------------------------------------------------
FW023-0218: Tt6_0218.out    [22/01/15] CRC32:[FCD23E7C] 3Ph/Standard production
FW023-0218: Tt6_0218.ehx    [22/01/15] CRC32:[EB110295] 3Ph/Standard production

N   - First release for MST 200 kVA.

