IS220PDIAH1B Electromagnetic Relay

The chain protection of IS220PDIAH1B has the advantage of timely and reliable, so when designing the PAT module, the limit alarm signal is used to participate in the chain protection of the output drive: the upper limit alarm input participates in the hardware chain of incremental output, and the lower limit alarm input participates in the chain protection of decremental output. At the moment when the valve reaches the upper limit or lower limit, the PAT module can be directly truncated through the hardware to increase the output or decrease the output, without CPU processing, so as to achieve timely and reliable.

IS220PDIAH1B module needs to drive the field electric actuator through the relay, so the good or bad of the relay is directly related to whether it can be controlled normally. Compared with the commonly used electromagnetic relay, solid state relay is a kind of non-contact switching control relay assembled with solid components, and its input is isolated by photocoupler, so that it can be controlled by a very small current.

IS220PDIAH1B using this control scheme to eliminate the oscillation phenomenon can only be reduced by reducing the sensitivity to increase the dead zone DeadZoon, and here DeadZoon is no longer the actual meaning of the dead zone, which contains inertia components. The control of the field has certain requirements on the sensitivity, so the shortcomings of this scheme is very obvious, it is recommended not to use.