BMX EHC 0200 Module Wiring
Original instructions
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At a Glance
The BMX EHC 0200 counting module uses the following:
DANGER
HAZARD OF ELECTRIC SHOCK
  • Turn off all power to sensor and pre-actuator devices before connection or disconnection of the terminal block.
  • Remove the terminal block before plugging / unplugging the module on the rack.
Failure to follow these instructions will result in death or serious injury.
NOTE: The two 16-pin connectors and the 10-pin connector are sold separately and are available in the BMX XTS HSC 20 connection kit.
Field Sensors
The module has type 3 of IEC 61131 inputs that support signals from mechanical switching equipment such as:
The equipment must have the following characteristics:
The module complies with most encoders that have a supply of 10...30 V and push-pull outputs.
NOTE: The module 24 V supply for sensors has thermal and short-circuit protection.
Assignment of the 16-Pin Connector
The figure below shows the physical location of the pin numbers for the 16-pin connector:
The symbol and description of each pin are described in the following table:
Pin number
Symbol
Description
1, 2, 7, 8
24V_SEN
24 VDC output for sensors supply
5, 6, 13, 14
GND_SEN
24 VDC output for sensors supply
15, 16
FE
Functional earth
3
IN_A
Input A
4
IN_SYNC
Synchronization input
9
IN_B
Input B
10
IN_EN
Enable input selected
11
IN_REF
Homing input
12
IN_CAP
Capture input
Sensor Connections
The example below shows sensors with applied to inputs IN_A and IN_B and equipment with applied to inputs IN_EN and IN_SYNC: 
1
IN_A input 
2
IN_B input 
3
IN_SYNC input (synchronization input) 
4
IN_EN input (enable input)
Encoder Connection
The example below shows an incremental encoder used for axis control and the three auxiliary inputs used especially for the 32-bit counter mode:
1
Encoder (inputs A, B and Z) 
2
IN_REF input (homing input) 
3
IN_EN input (enable input) 
4
IN_CAP input (capture input)
Connecting Outputs and Output Supplies
The figure below shows the connection of supplies and actuators to the 10-pin connector: 
1
24 V supply for actuators 
2
24 V supply for sensors 
3
Actuator for the Q0 output of counting channel 0 
4
Actuator for the Q1 output of counting channel 0 
5
Actuator for the Q0 output of counting channel 1 
6
Actuator for the Q1 output of counting channel 1
Field Actuators
The Q0 and Q1 outputs are limited by a maximum current of 0.5 A.
NOTE: The Q0 and Q1 outputs have a thermal protection as well as short-circuit protection.
Assignment of the 10-Pin Connector
The figure below shows the physical location of the pin numbers for the 10-pin connector:
The symbol and description of each pin are described in the table below:
Pin number
Symbol
Description
1
24V_IN
24 VDC input for sensors supply
2
GND_IN
0 VDC input for sensors supply
5
Q0-1
Q1 output for counting channel 0
6
Q0-0
Q0 output for counting channel 0
7
Q1-1
Q1 output for counting channel 1
8
Q1-0
Q0 output for counting channel 1
9
24V_OUT
24 VDC input for actuators supply
10
GND_OUT
0 VDC input for actuators supply
Safety Instructions
Electromagnetic perturbations may cause the application to operate in an unexpected manner.
Follow all local and national safety codes and standards.
DANGER
HAZARD OF ELECTRIC SHOCK
If you cannot prove that the end of a shielded cable is connected to the local ground, the cable must be considered as dangerous and personal protective equipment (PPE) must be worn.
Failure to follow these instructions will result in death or serious injury.
WARNING
UNEXPECTED EQUIPMENT OPERATION
Follow these instructions to reduce electromagnetic perturbations:
  • Adapt the programmable filtering to the frequency applied at the inputs.
  • Use a shielded cable (connected to the functional ground) connected to pins 15 and 16 of the connector when using an encoder or a fast detector.
In a highly disturbed environment:
  • Use the BMXXSP•••• shielding connection kit to connect the shielding without programmable filtering and
  • Use a specific 24 VDC supply for inputs and a shielded cable for connecting the supply to the module.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
The figure below shows the recommended circuit for high-noise environment using the shielding connection kit:
Improper fuse selection could result in damage to the module.
NOTICE
MODULE DAMAGE
Use fast acting fuses to protect the electronic components of the module from overcurrent and reverse polarity of the input/output supplies.
Failure to follow these instructions can result in equipment damage.