BENTLY Nevada 3500/53 133388-01 3500/53M Overspeed Detection Module

Description

When an alarm is active, 3500/53 133388-01 it will go inactive as soon as the proportional value

is no longer in alarm.

3500/53 133388-01 Alert is the first level alarm that occurs when the transducer signal level

exceeds the selected value. Danger is the second level alarm that occurs

when the transducer signal level exceeds the selected value. The Alert and

Danger values are set on the Setpoint screen.

Barriers

Select the MTL 796(-) Zener External option, or Galvanic Isolators if external

safety barriers are connected between the monitor and the transducer. If

using an Internal Barrier I/O Module, select the internal option. These

devices are used to restrict the amount of energy that can flow into a

hazardous area.

OK Mode

Latching

If a channel is configured for Latching OK, once the channel has gone

not OK the status stays not OK until a reset is issued. See page 47.

Nonlatching

If a channel is configured for Nonlatching OK, the OK status of that

channel will track the defined OK status of the transducer.

3500/53 133388-01 Timed OK Channel Defeat

An option that prevents a channel from returning to an OK status until that

channel’s transducer has remained in an OK state for the specified period of

time. If the option is enabled, the time is set to 30 seconds. This option prevents

false trips caused by intermittent transducers.

3.1.7 Velocity Channel Options

This section discusses the Configuration 3500/53 133388-01 Considerations and the Rack

Configuration Software screens associated with the Velocity Channel.

3.1.7.1 Velocity Channel Configuration Considerations

Consider the following items before configuring a Velocity Channel:

– Internal Barrier I/O Modules are not currently supported with 9200, 47633,

86205, and non-standard 2-wire seismoprobes.

– The “No Keyphasor” option is automatically selected for this channel type. No

Keyphasors are required.

– The Velocity Direct full-scale range is dependent upon the transducer type.

– When a full-scale range is modified, readjust the setpoints associated with this

proportional value.

3500/53 133388-01 Monitors must be configured in channel pairs (for example, Channels 1 and 2

may be configured as Velocity and Channels 3 and 4 may be configured as

Thrust Position).

– When integration is selected, the available Direct Full-scale Ranges will change

to reflect this.

– When band-pass filtering is selected, the high-pass and low-pass filters must be

set a minimum of a decade apart.

– The 100ms danger alarm is only available for the Velomitor and High

Temperature Velomitor options.

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