Application Examples; Safety Door (Emergency Stop); Motor Overload Protection; Motor With Brake - Phoenix Contact ELR H3-IES-SC-24DC/500AC-0,6 Manual Del Usaurio

5. Application examples

5.1. EMERGENCY STOP
Integrating a hybrid motor starter into an EMERGENCY STOP chain is pictured in Fig. 3 (page 54).
Here, the control voltage supply is switched off via the safety relays, as soon as the EMERGENCY STOP
button is actuated.
Switching off the control voltage supply with a controlled motor always results in wear in
the hybrid motor starter.
This switch should only be used if no more than 10,000 shutdowns can be expected over the entire
lifespan system.
If the switch-off is performed, for instance, from a "safe controller" with semiconductor outputs, the
residual voltage must be < 5 V DC. Interruptions ≤ 1 ms are filtered.

5.2. Safety door (EMERGENCY STOP)

In applications where the safety switch-off is a normal operating mode, such as in the case of safety door
or two-hand applications, a circuit as per Fig.4 (page 55) should be used.
In this application, the control current circuit is switched and not the control supply voltage.
If the switch-off is performed, for instance, from a "safe controller" with semiconductor outputs, the
residual voltage must be < 5 V DC. Interruptions ≤ 3 ms are filtered.

5.3. Motor overload protection

All safety-relevant functions are realized by the hybrid motor starter without any external influence.
Special circuit technologies are not necessary.
The wiring of the load current circuit should be realized in the above examples. The connection of the
module current supply can, however, be established directly to the voltage source without the PSR safety
relay. The same is applicable for the activation.

5.4. Motor with brake

If a motor with a brake (connection in the motor terminal block) is connected, the 400 V AC brake must be
connected to the 2/T1 and 6/T3 connections. A 230 V AC brake should be connected to the
4/T2 connection and the star point of the motor.
Please note: Motor current monitoring must be increased by the value of the brake (nominal
current brake). Set this as per the hybrid motor starter (see Item 4.3, page 17)!

5.5. Auxiliary relay connection

Auxiliary relay (e.g. PLC RSC 230UC/21, Order No.: 2966207) for activating the external brakes or
feedback to the PLC must be connected to the connection "4T2" and "N" of the system.
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