PD76-R5 (5 relays 16A, 6 digital inputs)

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General description

The JetHub PD76-R5 peripheral board is designed for power load control in home automation systems.

The board can be used with processor modules that have a 40-pin JetHub connector.

The functionality of the board depends entirely on the processor module used and the software (firmware) installed by the user.

The board is mounted in a PD76 DIN rail enclosure (130x76x57mm, which is about 4 standard modules for a DIN rail),

Periphery

  • 5 relays with maximum switching current up to 16A; (recommended current - no more than 10A);
  • 6 digital inputs "dry contact".

Restrictions

  • The operation of peripherals depends on the used processor module and the firmware installed on it.

Food

The following power options are available:

  • From an external calibrated DC source with a maximum supply voltage range of 9 to 56 V. Power is supplied to a dedicated external terminal.
  • Passive PoE is supported via the Ethernet port connector.

When power is applied to both the external terminal and the Ethernet connector at the same time, power will be supplied from the external terminal.

For power supply through an external terminal, it is necessary to use a stabilized direct current source with a power of at least 5W. The recommended (nominal) input voltage range is from 12V to 48V (the maximum input supply voltage range is from 9 to 56V).

When using Passive PoE technology, power is supplied through the following pairs of Ethernet cable: pair 4(blue, white-blue) and pair 8 (brown, white-brown). The polarity of the connection does not matter. There is no galvanic isolation of power supply circuits in the controller. The recommended nominal input supply voltage of Passive PoE is from 12 to 48V.

Operating conditions

  • Ambient temperature: 0..+40 С;
  • Relative air humidity up to 80% without moisture condensation;
  • Closed explosion-proof rooms without aggressive vapors and gases.

GPIO port expander

The peripheral board has an I2C GPIO port expander chip PCF8575. The I2C address of the expander chip is 0x22.

Pin Assignment:

Expander port Purpose
0 (IO0_0) Digital input 1
1 (IO0_1) Digital input 2
2 (IO0_2) Digital input 3
3 (IO0_3) Digital input 4
4 (IO0_4) Digital input 5
5 (IO0_5) Digital input 6
8 (IO1_0) Relay 1
9 (IO1_1) Relay 2
10 (IO1_2) Relay 3
11 (IO1_3) Relay 4
12 (IO1_4) Relay 5

Digital inputs

The controller contains 6 discrete inputs of the "dry contact" type, brought out to two external four-pin screw terminals with a contact pitch of 3.5mm. The closure of the discrete input must be made to the common contact (GND). Be careful when connecting digital inputs. Do not apply voltage to the digital inputs,  the board has pull-up resistors to 5V.

Relay

The controller contains 5 relays with a maximum switching current up to 16A. Recommended rated switching current - 10A. Switched voltage up to 250V AC. Galvanic isolation between relay contacts 1000V.

Relay 1 has an output type 1C (changeover contacts) and is connected to a three-pin screw terminal with a contact spacing of 5mm, the rest of the relays have an output type of 1A (normally open) and are connected to two-pin screw terminals with a contact spacing of 5mm.

I2C EEPROM

The peripheral board is provided with a non-volatile memory chip EEPROM AT24C64 or similar with a capacity of 64 Kbps (8 Kbytes). I2C address - 0x56. This memory can be used to store configuration, settings, etc. when installing the appropriate software.

UART1 connector

There is a separate optional 4-pin connector for the UART port on the peripheral board inside the case.

Purpose of the inputs of the "UART1" connector:

connector pin Purpose
1 SERIAL_ID_VOLTAGE
2 GND
3 UART1_TX 40-pin
4 UART1_RX 40-pin

The output voltage at pin 1 (SERIAL_ID_VOLTAGE) of the connector is used to identify the UART port and for UART1 port is about 0.2V. >)

Connector IO1

A separate optional 4-pin GPIO connector is provided on the peripheral board inside the case, connected to two pins of a 40-pin connector.

Assignment of the inputs of the "IO1" connector:

connector pin Purpose
1 IO_ID_VOLTAGE
2 GND
3 GPIO1 40-pin connector
4 GPIO2 40-pin connector

The output voltage at pin 1 (IO_ID_VOLTAGE) of the connector is used for identification and for the IO1 port is about 1.8V. (see "Voltage Levels")

Internal peripheral connector

Peripheral connector 40 pin (20 ×2 pin) with a pitch of 1.27 mm is designed to connect the processor module to the peripheral (mother) board.

Conclusion Purpose 40 pin Purpose PD76-R5
1 +5.0V Power supply of the processor module +5V
2 +5.0V Power supply of the processor module +5V
3 GND General
4 GND General
5 ETH_TXN Connecting an External Transformer to an Ethernet PHY
6 ETH_TXP Connecting an External Transformer to an Ethernet PHY
7 ETH_RXN Connecting an External Transformer to an Ethernet PHY
8 ETH_RXP Connecting an External Transformer to an Ethernet PHY
9 ETH_LED1 Connecting an External LED to an Ethernet PHY
10 ETH_LED0 Connecting an External LED to an Ethernet PHY
11 GND General
12 SPI_MOSI Reserved (JXM)
13 GPIO0
Reserved (JXM)
14 SPI_MISO Reserved (JXM)
15 SPI_CLK Reserved (JXM)
16 GND General
17 I2C_SCK Reserved (JXM)
18 I2C_SDA Reserved (JXM)
19 GND General
20 UART1_RX Displayed on the 4 pin of the UART1 connector
21 UART1_TX Displayed on the 3rd pin of the UART1 connector
22 UART2_TX Not used
23 UART2_RX Not used
24 GND General
25 GPIO1 Routed to the 3rd pin of the IO1 connector
26 GPIO2 Routed to the 4 pin of the IO1 connector
27 GND General
28 GPIO3 Out. GPIO port expander interrupt
29 GPIO4 Out. Interrupt from JXM module
30 GPIO5 Not used
31 GPIO6 Not used
32 GPIO7 Not used
33 GPIO8 Not used
34 GPIO9 Not used
35 GPIO10 Not used
36 GPIO11 Not used
37 CPU_RESET Not used
38 GND General
39 USB_DN Not used
40 USB_DP Not used

PLD-2x6-2.54 connector for installing the module in the motherboard

Format and pinout changed in future versions. Not recommended!

Pin numberDestinationDescription
1SLOT_ID0_ADCTo set the slot number. Used by the module to determine the slot number in which it is installed
2SLOT_ID1_ADCTo set the slot number. Used by the module to determine the slot number in which it is installed
3PWR_5V+5V power
4PWR_3V3+3.3V supply
5GND Common
6I2C_SCLI2C bus (common for all modules)
7I2C_SDAI2C bus (common for all modules)
8< /td>SPI_MOSISPI bus (common for all modules)
9SPI_MISOSPI bus (common for all modules)
10SPI_SCKSPI bus (common for all modules)
11#MOD_SEL Chip Select In for SPI module/chip selection (activated by logic low)
12#MOD_INT Module interrupt Out (low logic level, the circuit must provide "wired OR" operation - "open collector" output)< /td>

PLD-2x2-2.54 connector for connecting an external terminal

Format and pinout changed in future versions. Not recommended!

< td>IO_4
Pin numberDestinationDescription
1IO_3Wired to external terminal
2IO_2Wired to external terminal
3Wired to external terminal (may not be used for 3-pin module)
4IO_1Output to external terminal