K-AN8Pinout

K-AN8: connector pinouts

Updated

Use these tables to wire power, CAN, sensors and loads to K-AN8, and to stay within the limits of each pin.

Connectors at a glance

K-AN8 (INF2210) has the same CAN and analogue connectors as K-BOX, without the thermocouple sockets:

  • Two 9-way D-Sub CAN connectors with nuts, one male and one female. Both carry the same signals, so CAN and power pass through a stack of K-Series modules.
  • One 25-way male D-Sub, labelled ADC, for the eight analogue inputs and the sensor supplies.
  • Two LEDs, labelled Status and CAN.

Pins missing from the tables are not connected.

CAN connectors

K-AN8 CAN connectors, 9-way D-Sub, male and female
Pin Function
1 Digital 4 output, or +4.5 V instrumentation supply
2 CAN-L
3 Ground
4 Digital 1, input or output
5 Power ground
6 Digital 3, input or output
7 CAN-H
8 Digital 2, input or output
9 Supply voltage, 6 to 36 V DC
K-BOX and K-AN8 CAN in, 9-way D-sub D-SUB 9 · MALE K-BOX and K-AN8 CAN in, 9-way D-sub Front view of the male connector on the module. 1 2 3 4 5 6 7 8 9 1Digital out 4 / +4.5 V 2CAN-L 3GND 5Power GND 4Digital I/O 1 6Digital I/O 3 7CAN-H 9Supply +6 to +36 V 8Digital I/O 2 Power Ground CAN bus pins Linked pins are a differential pair
CAN in: the male connector, seen from the front.
K-BOX and K-AN8 CAN out, 9-way D-sub D-SUB 9 · FEMALE K-BOX and K-AN8 CAN out, 9-way D-sub Front view of the female connector on the module. 1 2 3 4 5 6 7 8 9 5Power GND 4Digital I/O 1 3GND 1Digital out 4 / +4.5 V 2CAN-L 9Supply +6 to +36 V 8Digital I/O 2 6Digital I/O 3 7CAN-H Power Ground CAN bus pins Linked pins are a differential pair
CAN out: the female connector, seen from the front.

Digital inputs and outputs

The four digital pins work as inputs or as outputs. Digital 1 to 3 also measure frequency, counts and pulses up to 100 kHz.

As inputs

  • Keep the voltage between −8 V and +12 V.
  • An input reads low below 1.5 V and high above 2.0 V.
Four ways to drive a digital input DIGITAL INPUT · WIRING Four ways to drive a digital input Switch Instrumentation supply Pull-up Input A closed switch pulls the input low. NPN transistor Instrumentation supply Pull-up Input Control The transistor turned on pulls the input low. Relay contact Instrumentation supply Pull-up Input Relay coil in a separate circuit closes the contact A closed contact pulls the input low. Schmitt-trigger buffer Instrumentation supply Pull-up Input Signal The buffer output drives the input directly. The input reads low below VIL and high above VIH. Take VIL, VIH, the pull-up value and the maximum input voltage from the product guide. Every circuit shares the module ground.

As outputs

K-AN8 has four open collector outputs. Each switches a load to ground and is rated 45 V and 10 mA.

  • Use them to switch relay coils, indicators and logic inputs.
  • Supply the load from an external source and fit a flyback diode across a relay coil.
  • Drive larger loads through a relay.
Switching a relay coil from an open collector output DIGITAL OUTPUT · WIRING Switching a relay coil from an open collector output Logger or I/O module open collector output Logic Output GND Output limits: Vmax, Imax Relay coil ≤ Imax Flyback diode + − Load supply +V, up to Vmax Common ground: supply negative to the GND pin Vmax and Imax are the output ratings in the product specification. The diode across the coil carries the switch-off spike so it never reaches the output.

Set up the outputs in K-CAL. K-AN8 sends the output states on CAN with its measurements.

For every input and output circuit, see REBEL and K-Series: wiring the wake-up pin and digital I/O.

ADC connector

The ADC connector is a 25-way male D-Sub with nuts. Each analogue input is a differential pair. For example, input 0 uses pins 6 and 18, and input 7 uses pins 13 and 25.

K-AN8 ADC connector, 25-way male D-Sub
Pin Function
1 +24 V sensor supply output
2 +5 V sensor supply output
5 Analogue ground
6 Analogue input 0 positive
7 Analogue input 1 positive
8 Analogue input 2 positive
9 Analogue input 3 positive
10 Analogue input 4 positive
11 Analogue input 5 positive
12 Analogue input 6 positive
13 Analogue input 7 positive
14 Ground out
15 Ground out
17 Analogue ground
18 Analogue input 0 negative
19 Analogue input 1 negative
20 Analogue input 2 negative
21 Analogue input 3 negative
22 Analogue input 4 negative
23 Analogue input 5 negative
24 Analogue input 6 negative
25 Analogue input 7 negative
K-BOX and K-AN8 ADC connector, 25-way D-sub D-SUB 25 · MALE K-BOX and K-AN8 ADC connector, 25-way D-sub Front view of the male connector on the module. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1+24 V out 2+5 V out 3NC 4NC 5Analogue GND 6Analogue in 0+ 7Analogue in 1+ 13Analogue in 7+ 12Analogue in 6+ 11Analogue in 5+ 10Analogue in 4+ 9Analogue in 3+ 8Analogue in 2+ 14GND out 15GND out 16NC 17Analogue GND 18Analogue in 0− 19Analogue in 1− 25Analogue in 7− 24Analogue in 6− 23Analogue in 5− 22Analogue in 4− 21Analogue in 3− 20Analogue in 2− Power Ground Linked pins are a differential pair NC: not connected
  • Sensor supplies: the +24 V and +5 V outputs share 80 mA between them.
  • Analogue inputs: do not apply voltages outside the range you set for the channel in K-CAL. The maximum is ±75 V to analogue ground and ±150 V between analogue inputs.

Related guides

Products in this guide

K-AN8

Analogue to CAN converter

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