ABB TZIDC-200 locator configuration and troubleshooting

1. Implementation of SIL2 security mechanism

This locator meets the functional safety requirements of IEC 61508/IEC 61511-1, with a safety failure score (SFF) of up to 85% and an average probability of dangerous failure (PFDavg) of 7.52 x 10 ^ -4. When there is a power failure, gas source failure, or malfunction of the locator itself, the locator will release pressure to the actuator through exhaust and use a spring to move the valve to the predefined safe end (fully open or fully closed).

2. Independent operation of emergency shutdown module (ESD)

The ESD module requires an independent 24V DC power supply (20... 30V DC) and is electrically isolated from the input signal. When the voltage is below 5V, the safety position function is activated.

Important note: ESD modules must be used in conjunction with fail safe pneumatic structures. Its biggest advantage lies in working independently of the motherboard, that is, regardless of any faults that occur on the motherboard, the DCS/PLC system can still obtain information on the final control components at any time and perform safety actions.

On site application experience and storage standards

Based on the physical characteristics of the equipment, engineers need to pay attention to the following points on site:

Environmental adaptability: The equipment protection level reaches IP 65/NEMA 4X, but if the on-site environmental temperature may exceed 85 ° C, insulation measures should be added.

Seismic resistance and installation angle: This equipment meets the seismic requirements of DIN/IEC 68-3-3 Class III, and the installation direction is not limited. However, during installation, it should still be ensured to stay away from strong vibration sources to avoid long-term operation that may cause wear on mechanical transmission components.

Storage and warranty: The equipment must be stored in a clean and dry environment before installation. If the equipment malfunctions during the warranty period, it is necessary to properly retain the process operation records, alarm logs, and all storage, installation, and maintenance records at the time of the malfunction. These documents are the key basis for applying for ABB after-sales support.