Tripp Lite SU60KX manual Input Voltage Detection

2 Theory of Operation (continued)

2.5 Input Voltage Detection

Located at NH-SYS-P board (Auxiliary Power for System, Detect Circuit for Voltage and Current)

CP78

CP83

RP159

RP160

BYP/R

RP161

RP162

RP163

6

UP18B

IP/R

RP164

RP165

RP166

6

UP20B

7

7

CNP7

IP/R

RP167

RP168

RP169

5

VbypR

RP170

RP171

RP172

5

VinR

BYP/N

1

IP/N

2

IP/S

RP173

RP174

3

4

IP/T

5

G1CP95

G1CP86

6

IP/N

7

CP81

CP87

CNP8

RP175

RP176

1

BYP/R

RP177

RP178

RP179

9

UP18C

RP180

RP181

RP182

9

UP20C

2

BYP/S

IP/S

3

BYP/S

8

8

VbypS

VinS

4

10

10

5

BYP/T

6

BYP/N

7

CP82

CP88

RP183

RP184

BYP/T

RP185

RP186

RP187

13

UP18D

IP/T

RP188

RP189

RP190

13

UP20D

14

14

12

VbypT

12

VinT

Located at NH-SYS-M board (System MCU and Control Circuit)

5VS

5VS

VbypR

DM1

RM23

VinR

DM2

RM24

RM27

RM30

RM28

RM31

5VS

BYPZO R

5VS

INPZO R

(12)

(14)

QM1

QM2

2

2

RM36

DM5

CM20

RM37

DM6

CM21

RM38

RM39

RM40

RM41

3

Vbyp_R

3

Vin_R Vin_R

(89)

G1

(92)

G1

1

1

G1

G1

5VS

5VS

5VS

5VS

2

2

2

2

RM50

DM9

RM63

DM16

RM51

DM11

RM64

DM17

VbypS

VbypT

VinS

VinT

3

3

Vbyp_S

3

Vbyp_T

Vin_S

3

Vin_T

RM54

(91)

RM67

(93)

RM53

(94)

RM68

(96)

1

1

1

1

G1

G1

G1

G1

(a)MCU detects RMS value of bypass 3-phase voltage via Vbyp_R (89), Vbyp_S (91) and Vbyp_T (93).

(b)MCU detects RMS value of main input 3-phase voltage via Vin_R (92), Vin_S (94) and Vin_T (96).

(c)MCU detects the bypass frequency and zero crossing via BYPZO_R (12) at falling edge.

(d)MCU detects the main input frequency and zero crossing via INPZO_R (14) at falling edge.

53