Teknic CLEARPATH-EC - Clearpath-EC Inputs; Automatic Input Features; Input Current Draw

C LEAR P ATH -EC U SER M ANUAL REV 1.11 29
C LEAR P ATH -EC I NPUTS
When I/O-A or I/O-B are configured as inputs, they support a wide range
of input devices including simple toggle switches, limit/home sensors,
relays, PLC outputs, microcontroller outputs, and more.
The state of Input A and Input B can be read by the EtherCAT Master. As
such, the A and B inputs can be used by the EtherCAT Master to read
sensors or digital logic signals.
A UTOMATIC I NPUT F EATURES
In addition to adding I/O to the Master, there are a few fixed functions
within the ClearPath-EC motor that the inputs can trigger automatically:
1. Limit. Use as a limit input can stop the motion in a programmed
direction. One, two, or no limit inputs can be used.
2. Home Registration. This is used to monitor a switch to register
the axis during a homing operation. The axis is then brought to a
defined point relative to the switch. Home registration use can be
mixed with limit switch use for a linear axis.
3. Touch Probe. Input A can be configured to perform a high-speed
position capture of the internal encoder signal (for use with a
touch probe or other trigger sensor). The captured value is stored
and can be read by the EtherCAT Master for use in calibration, on-
the-fly registration, etc.
4. Interlock. This will disable the servo when triggered. It is not
safety rated.
I NPUT C URRENT D RAW
See table and graph for minimum input current required for ClearPath
input circuits over the range of acceptable input voltages.
Voltage at
ClearPath Input
Minimum Input
Current Required *
5 VDC 8 mA
12 VDC 9 mA
24 VDC 12 mA
To guarantee reliable input operation, the
supply used with your ClearPath inputs should
be capable of sourcing at least the above stated
current at the associated voltage for each input
used.
*
Min. Input Current (mA)
5912 16 24
Input Voltage (VDC)
12
10
11
9
8
20
Maximum input current for given input voltages
DAMAGE WARNING: C LEAR P ATH I NPUTS
ClearPath-EC inputs are robust, but there are some situations where they
can be damaged. For example, connecting 75VDC bus power across an
input will kill it.
T
EKNIC , I NC . T EL . (585) 784-7454