Schenck Vibrocontrol 110 C01 - OK-Monitoring Group O

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VC 1100 List of Setup Parameters

VC1100E/paralist Version 2 →

OK-Monitoring Group O

General

VIBROCONTROL 1100 has a cyclic self-monitoring routine.

This routine tests the pickups and the cables between VIBRO-

CONTROL 1100 and the pickups. The pickup signal is checked to

verify that it remains within a predefined range. This method de-

tects errors such as disconnected pickups, broken cables and

shorts. If an OK error occurs, the OK relay is tripped and the event

is stored in the Log Book.

Note:

When vibration velocity transducers with moving coil are used,

lead breakage or short-circuit cannot usually be recognized. A

constant current is thus superposed to the measuring signal. This

current effects a direct voltage drop of approx. 1 V in the VC-1100.

This voltage drop is measured as OK voltage.

The OK relay is configured to the normally energized mode. In this

mode a power failure at the VIBROCONTROL 1100 will trip the

OK relay to the alarm position.

In special cases, for example if line drivers or isolation amplifiers

are used, it might be necessary to disable the OK monitoring

function for the pickups. Therefore, VIBROCONTROL 1100 provi-

des for disabling this function. This has no effect on other self-

monitoring functions.

O 01 Channel A : OK Monitoring

Choises : Y, N

Function : Enable or disable OK monitoring of the pickup on

channel A.

Y = OK monitoring for pickup channel A is active

N = OK monitoring for pickup channel A is not

active

O 02 Channel B : OK Monitoring

Choises : Y, N

Function : Enable or disable OK monitoring of the pickup on

channel B.

Y = OK monitoring for pickup channel B is active

N = OK monitoring for pickup channel B is not

active