Hitachi SJ7002 Series Instruction Manual page 84

2–42
Emergency Stop Function
• S13 Emergency stop button – Switches the inverter into safe stop mode and the motor into
free-running status
• S14 Start/stop button – Switches the inverter into safe stop mode by [EMR] signal input to a
digital input terminal and sets the motor into free-running status. (This operation corre-
sponds to EN60204-1 Stop Category 0.)
• Safe stop mode continues as long as the [EMR] signal is input or until the [RS] signal is
input even after the [EMR] signal is canceled.
• To use the inverter for an application in which a mechanical brake (such as a crane or
elevator) must be controlled, the safety output from an external safety relay must be serially
connected to the brake control circuit.
NOTE: The cables used for safety relay wiring, the EMR signal, and RS signal must be
shielded coaxial cables, such as type RG174/U complying with MIL-C17 (made by LAPP) or
KX3B complying with NF C 93-550. Each cable must be 2.8 mm in outer diameter and 2 m or
less in length. The cable shielding must be grounded.
NOTE: Every inductor-related device, such as a relay or contactor, must have an over-voltage
protection circuit.