Measures Generator voltage (7Vdc at 3 x 22Vac(line) input) Measures Generator current (7Vdc at 3 x 5Vac input) (4.2Vdc at 3 x 3Vac input) Measures Sync voltage (7Vdc at 3 x 22Vac(line) input) Conditions Field Current (3Vdc nominal) Generates 12 interrupts per Cycle (sync to R-phase signal) Generates 12 interrupts per 20ms (during free run condition) Monitors frequency and voltage level of actual output. Program execution in CPU is monitored. Interrupt rate is monitored. Internal clock is monitored. Digital Inputs –5 (24 Volt), 6 (HCMOS) Digital Outputs –16 (HCMOS), 2 (24 Volts) Power supply: +5V, ±15V, +24V

1. Presentation by:
Sadashiva Achary/ DGM-Sub Assy Engg

2. DAVR – CPU module 69203DB1A(UN0660)
 Processor – 16 bit, TMS9995 (Texas Instruments) at 12Mhz.
 Memory – 32 Kbytes Program memory (EPROM)
4 x 8 Kbytes - EPROM/EEPROM/RAM
 Serial Interface - RS232/RS422 (Programmable)
 Digital Inputs – 6 (TTL level), 10 (HCMOS), 7 (24 Volts)
 Digital Outputs – 9 (TTL Level), 14 (HCMOS), 4 (24 Volts)
 I/O BUS – 1 to 16 bits Serial, addressable up to 4096 bits.
Together with Analog I/O module 69203IV1A (UN0611)
 Analog Inputs - 8 Channels (Bipolar, Programmable as ±10V or
±50V)
 Analog Outputs – 1 Channel, ±10V.
 Digital Inputs – 4 (24 Volts)
 Digital Outputs – 1 (24 Volt)
 Relay contact Outputs – 4 NC / NO
 Power supply: +5V, ±15V, +24V

3. DAVR – Interrupt Generator module
69203GB1A(UN0661)
 Measures Generator voltage (7Vdc at 3 x 22Vac(line) input)
 Measures Generator current (7Vdc at 3 x 5Vac input)
(4.2Vdc at 3 x 3Vac input)
 Measures Sync voltage (7Vdc at 3 x 22Vac(line) input)
 Conditions Field Current (3Vdc nominal)
 Generates 12 interrupts per Cycle (sync to R-phase signal)
 Generates 12 interrupts per 20ms (during free run condition)
 Monitors frequency and voltage level of actual output.
 Program execution in CPU is monitored.
 Interrupt rate is monitored.
 Internal clock is monitored.
 Digital Inputs – 5 (24 Volt), 6 (HCMOS)
 Digital Outputs – 16 (HCMOS), 2 (24 Volts)
 Power supply: +5V, ±15V, +24V

4. DAVR – Digital I/O module 69203NB1A(UN0662)
 Digital Inputs – 16 (24V) Static inputs.
 Digital Inputs – 16 (24V) Programmable as
Pulse/Static inputs.
 Digital Outputs: 32 (24V)
 Self monitoring of the module.
 Module selection through 2 x 6-bit address Switch.
(One switch for I/P address and Other for O/P)
 Power supply: +5V, +24V

5. DAVR – Digital Firing and control module
69203DU1xA(UN0663-xxx)
 Processor – 16 bit, TMS9995 (Texas Instruments) at 12Mhz.
 Memory – 32 Kbytes Program memory (EPROM)
 Digital Inputs – 16 (24 Volts)
 Digital Outputs – 8 (24 Volts)
 Analog inputs – 3 (Bipolar ±10V)
 Analog Outputs – 1(Bipolar ±10V)
 Measures synchronizing input.
 Generates 6 firing pulses(angle 10°min to 170°max according to
Control input with frequency compensation (10 Hz to 180Hz for
rated freq of 50, 75, and 150Hz and 10 to 1.1x rated freq for rated
freq >=300Hz).
 Control input as analog or Digital(selected thro 6 bit add. Switch)
 Controlling action selectable as Uc/If and Internal/external.
 Pulse blocking if any of the pulse is shorted to GND/other pulse.
 Reference value generator selectable as internal and external.
 Follow-up control with the additional reference value input.
 Power supply: +5V, ±15V, +24V

6. DAVR- Analog I/O module 69203NA1A(UN0610)
 Analog inputs - 16 (common mode) or 8 (diff. mode)
0 to +10V or ±10V (selectable)
6 channels used as sample and Hold
inputs.
 Analog Outputs – 2 (0 to 10V or ±10V ; selectable)
 Module selection through 2 x 6 bit address switch.
(One switch for I/P address and Other for O/P)
 Self checking for functioning of A/D and D/A chips.
 Power supply: +5V, ±15V, +24V

7. DAVR – Alarm Indication module
69203SV1A(UN0665)
 No of Channels – 32 (LED indication)
 Module selection through 6 bit address switch.
 Module can be used as Master or Slave.
 Power supply: +5V

8. DAVR – Current Flow Monitor module
69203SJ1A(UN0667)
 Used in Excitation Monitoring system only.
 Checks for the conduction of the Thyristor within 1 ms
time after giving the firing Pulse.
 Monitors up to 2 Thyristor Bridges.
 Failure of each Thyrisotr is indicated by lighting a
corresponding LED on the Front Panel of the module.
 Master and Slave operation.
 Self testing of the firing pulse inputs and internal
timing circuit. On failure of any firing pulse or timing
circuit, entire monitoring is blocked.
 Module selection is through 4 bit address switch
 Power supply: +5V, ±15V, +24V

9. DAVR – Micro terminal module
69203TB2A(UNS2660)
 Used for data communication with CPU module
 Displays 4 lines of Hex or Decimal Data on LCD (4 x 16 char)
 Identifies automatically the target CPU.
 Data read memory range: 0000H to FFFFH
 Data write memory range: Depends on the target CPU module.
 4 analog signals corresponding to the 4 Hex data displayed are
available at 4 test points.
 Gets 24Vdc supply from the target CPU.
 RS232 printer Output port.
 5 x 6 matrix keypads with de-bounce arrest circuit.
 12 keys with dual function with the help of Shift key.
 Power supply: 24Vdc
 Failure of communication with CPU module is indicated by
‘Transfer Error’ with periodic checking for communication.

10. DAVR – DC-DC Power supply module
69203PY1A(UN0664)
 Input : 110Vdc(82V - 156V), 1.7A(2.3A - 1.2A)
220Vdc(165V-312V), 0.85A (1.13A – 0.6A)
 Output: +5V(5.0V to 5.2V) ,5A, 0.3A Base load.
±15V(± 14.21V to ± 15.8V), ± 1.0A, ±0.1A Base load
+24V(22.8V to 26.4V), 4.0A, 0.2A Base load
 Over voltage monitoring : 5.5 V on 5V output (instant tripping)
 Under Voltage monitoring : 4.7V, ±13.9V, 21V (Trips after 10 s)
 Remote shutdown facility.
 Parallel connection of 2 modules with current balancing.
DAVR – AC-DC Supply module 69203PZ1A(UNC4664)
 Input: 82Vac- 165Vac(±10%), 12.3A max
110Vdc to 250Vdc (±25%),,15A max
 Output: 82Vdc to 312Vdc , 13A max

11. DAVR – Voltage and current measuring module
69203IA1A(UNC4660)
 Input Voltage: Generator, synchronizing & a spare
Rated Input: 3x100Vac .. 120Vac(Generator and synchronizing)
1x100Vac .. 120Vac(spare)
Rated Frequency: 50/60Hz,
Input voltage range: 0 to 130% of rated
Input Frequency range: 80 to 120% of rated
 Input Current: Generator Current, Field Current
Rated Input: 3 x 1A or 5A(Generator); 2 x 1A or 5A(Field)
Rated Frequency: 50/60Hz,
Input Current range: 0 to 150% of rated
Input Frequency range: 80 to 120% of rated
 Output Voltage: 3 x 20..24Vac (Generator and Synchronizing)
1 x 20.. 24Vac(Spare)
 Phase Error input/output <1°el
 Output Current: 3 x 3Vac (Generator)
1 x 3Vdc (Field)

12. DAVR-Binary Input module 69203IBxA(UNC4661)
 No of Channels: 16
 Input voltage: 24V, 48V, 110V, 125V, 220V, 250V
selectable thro’ input resistance value
 No of outputs: 16
 Output Voltage: 20Vdc to 23Vdc at 10ma load.
 Isolation: Input to Input : 2KVac for 1 Min
Input to Output: 2.5KVac for 1 Min
 Power supply 24Vdc.
DAVR-Binary Output module 9203OB1A(UNC4662)
 No of Channels: 16
 Input voltage: 20V to 23Vdc, 6mA
 Output Relay Contact rating: 250Vac/dc, 2A
 Isolation: Output to Output : 2KVac for 1 Min
Input to Output: 2.5KVac for 1 Min
 Power supply 48Vdc.