Connect-Tek Transa PRO 17 Manuál s instrukcemi stáhnout pdf (Strana 70)

On or Off Delay should only be applied where a delayed response can be

tolerated and where the exact speed does not need to be known. When

Delay is applied, all outputs including Digital, Relays, Analog and

Display are affected. Delay will affect the amount of time the instrument

uses to respond to an alarm condition.

The Following sections 4.2.4.2.3 through 4.2.4.3.2 are not user-definable

O ed in

section 4.2.4.4.

Failsafe Setpoint

Failsafe refers to a mode of operation that utilizes the normally closed set

of contacts on a relay, where during normal operation the relay is

energized and the contacts are held open. In the event of power loss to the

instrument, an alarm condition will result at the switched output device.

tio hat signals a fault to

onstants. The sections are included to help provide greater insight into the

ifferent types of switching characteristics. Failsafe, Non-Failsafe,

verspeed and Underspeed all relate to the Setpoint Types outlin

4.2.4.2.3.

Alarm condi n refers to a switched output state t

auxiliary or support equipment. This type of relay behavior should be used

in applications where loss of speed control

cannot be tolerated or will

result in a hazardous condition. Only Relay 1 and Relay 2 have normally

closed contacts and are therefore the only switched outputs capable of

Failsafe switching.

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Connect-Tek Transa PRO 17 Manuál s instrukcemi Strana 70