Schematics

ManualsBrandsSequent Microsystems ManualsMicrocontroller Accessories4-Relays 4-Inputs 8-Layer Stackable HAT for Raspberry Pi

D D

C C

B B

A A

MOUNTING HOLES

CONNECTOR PLUGS

SEQUENTMICROSYSTEMS.COM

PLASTIC BAG

5cm X 10cm

18mm STANDOFFS

2.5mm NUTS M2.5x5mm SCREWS

ANTISTATIC BAG

13cm X 19cm

ID Jumpers

BLOCK DIAGRAM

1.1

4 RELAYS-PLUS

1 5Wednesday, February 17, 2021

Title

Size Document Number Rev

Date: Sheet of

INPUTS

+5VIN[0-3]

GND

IO_EXPANDERS

+5V

GND

SDA

SCL

P[4-7]

IN[0-3]

RASP_RX0

RASP_RX

RELAYS

+5VP[4-7]

GND

CONNECTORS

+5V

SDA

SCL

GND

RASP_RX0

RASP_RX

SCL

SDA

P[4-7]

IN[0-3]

RASP_RX0

RASP_RX

5VIN

+5V+5V

+5V

J31

KY15K

BAG1

JMP2

3A FUSE

J81

KY15RB

N4 SC3

J61

J91

D13

4.7K

SC4

J51

SC2

J101

J41

BAG2

J111

4.7K

JMP1

J71

SC1

HX3400

Summary of content (5 pages)

PAGE 1
5 4 3 2 1 D D +5V +5V SCL P[4-7] GND RASP_RX CONNECTORS C +5V RELAYS +5V RASP_RX0 RASP_RX RASP_RX P[4-7] SCL RASP_RX0 RASP_RX0 GND SDA SCL P[4-7] GND SDA SDA B1 +5V +5V B2 B3 IN[0-3] IN[0-3] IN[0-3] GND B5 +5V +5V INPUTS C IO_EXPANDERS +5V J3 F1 J41 J51 J61 3 2 1 J81 B 3 2 1 J91 3 2 1 J101 3 2 1 3 2 1 5VIN J71 3 2 1 3A FUSE R8 R9 4.7K 4.
PAGE 2
5 4 3 2 1 +5V J1 3.3V SDA SCL SDA SCL 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 D GND SW1 RDPB R27 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 +5V RASP_TX RASP_RX0 RASP_RX0 D PI-CONN C C 15K 3.3V R28 U4 4.7K RASP_RX RASP_RX R22 100 485_RX B 1 RO VCC 8 2 RE B 7 3 RASP_TX R23 100 485_TX 4 Q1 R24 4.7K GND DE DI A 6 GND 5 J12 R25 10 RS485B R26 10 RS485A 2 C3 SP3485 1 J121 2 1 1 2 B KY15RB KY15K D14 .
PAGE 3
5 4 3 2 1 D D J11 1 IN-H1 R10 10K 3 2 IN-L1 COM1 R18 1.2K 1 IN-H2 R11 10K 3 2 IN-L2 COM2 R19 1.2K IN-H3 R12 10K IN-L3 COM3 R20 1.2K 1 IN-H4 R13 10K 3 2 IN-L4 COM4 R21 1.2K J10 C J9 1 3 2 J8 U3 IN-HR1 1 D9 16 D5 IN-HR2 2 15 3 14 4.7K +5V 4 13 5 12 C10 D10 LED-A2 R15 4.7K 10uF C IN1 C11 D11 D7 LED-A3 R16 4.7K 10uF R17 4.
PAGE 4
5 4 3 2 1 +5V D R3 R1 R2 15K 15K 15K U1 1 A0 VDD 16 A1 2 A1 SDA 15 A2 3 A2 SCL 14 IN0 4 P0 INT 13 IN1 5 P1 P7 12 P7 IN2 6 P2 P6 11 P6 IN3 7 P3 P5 10 P5 8 VSS P4 9 P4 7 5 3 1 A0 RASP_RX J2 RASP_RX0 8 6 4 2 C GND D SDA SCL C1 .22uF C TCA9534 IN[0-3] P[4-7] RASP_RX0 B B RASP_RX A A SEQUENTMICROSYSTEMS.COM Title Size A Date: 5 4 3 4 RELAYS-PLUS Document Number IO EXPANDER Wednesday, February 17, 2021 2 Rev 1.
PAGE 5
4 3 2 1 D D 1 +5V P1 J4 P1-NC P1-COM P1-NO 1 2 3 P2-NC P2-COM P2-NO 1 2 3 R7 4.7K 1 R6 4.7K P2 3 4 5 LED4 R5 4.7K J5 C U2 +5V P4 1 18 REL14 P5 2 17 REL13 P6 3 16 REL12 P7 4 15 REL11 5 14 REL4 6 13 REL3 7 12 REL2 8 11 REL1 9 10 D2 D3 D4 LED LED LED P3 3 4 5 J6 P3-NC P3-COM P3-NO 1 2 3 P4-NC P4-COM P4-NO 1 2 3 B GND TBD62083A 1 2 P[4-7] D1 LED 1 2 LED3 C R4 4.7K LED2 LED1 2 3 4 5 P4 J7 2 3 4 5 B C2 .