Secant Cardio IIe Specifikace stáhnout pdf (Strana 23)

Troubleshooting

Bus (SNet) protection

To protect the central controller against noise, lightning and shorts that may occur on the bus.

POLYSWITCH* RT1 and RT2 along with TRANZORB* TZ1 and TZ2 will limit the energy at the bus input.

Relay protection

All relay contacts are protected by a 35V RMS metal Oxide varistor. Still it is highly recommended to limit

any source voltage applied to these relays to 24 RMS.

• Maximum contact current is 3 Amp for all relays.

Security input protection

For each of the 16 inputs, there is a resistor and a TRANZORB* that together will limit the voltage at 5V.

Normal operation of these inputs is a current loop to ground. Maximum voltage that can accidentally

applied at each input without causing any damage is 12V.

There is another protection (LC lowpass filter) against high frequency noises picked up by wires.

Digital key input protection

A POLYSWITCH* and a TRANZORB* will limit the voltage to 5V.

X-10 interface protection

Inductors and Zener diodes will limit noises coming from the TW523.

* POLYSWITCH, TRANZORB and SIDACTOR are registered trademarks of their respective

manufacturer.

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Secant Cardio IIe Specifikace Strana 23