2. Wiring
[SMF-2008-A]
– 2-5 –
2.4. IO interface
Connect "emergency stop input (TB3)" in the following way.
2.4.1. Wiring of emergency stop input (TB3)
Rated voltage 24V ±10%, rated current within 5mA
Fig. 2.6 Connection example of emergency stop input (TB3)
The emergency stop input will be effective as default setting. Refer to the “AX Series TS, TH,
XS Type manual” (SMF-2006) for setting instructions.
Emergency stop is a “b” contact input. Thus it will take effect when emergency stop input (TB3)
becomes open. (Emergency stop using CC-Link will be effective when the input data is OFF)
Fig. 2.7 Specification of emergency stop input
Emergency stop can be inputted by TB3’s input terminal or CN3’s DeviceNet communications and
if one of the inputs becomes open (or off), it will be recognized as emergency stop.
→
Input to TB3 is necessary to release the emergency stop.
Fig. 2.8 Applicable cable to TB3 and peeling size
The cable sheath peeling length should be 8 or 9mm.
The applicable cable is AWG20 to 24 (single cable) or AWG20 to 22 (stranded cable).
External power supply
24V DC
(Prepared by customer)
AWG20 to 24 (single cable)
AWG20 to 22 (stranded cable)
8~9mm
* The polarity of the
external power supply
can be inverse.
CN3: emergency stop
Input (serial)
TB3:emergency stop
input (I/O)
Serial communication
processing
Input processing
Emergency stops if either
input becomes open (or
off).
Emergency stop
