choices are pounds (lbs), kilograms (Kgs), tons, and metric tons (Mtons). Note

 

that the display unit can be changed at any time and is independent of the units

 

used for minimum and maximum trip point. If a job was stored in tons, and this

 

unit is changed to pounds, the stored job will still be correct. For example, if 2

 

tons were stored for a job and the display unit is changed to pounds, when the job

 

is recalled it will be set to 4000 pounds.

Fault Time

If the pressure in a counterbalance, cushion, or hydraulic overload system goes

 

out of tolerance due to a leak or any other reason, a countdown starts. The control

 

will try to bring the pressure back into tolerance before the countdown expires. If

 

it can not correct the pressure, the press will be stopped. The fault time is the

 

countdown in seconds. Suggested value is 20 seconds.

Tolerance

This is the amount by which the system will allow the pressure to vary and still be

 

considered “good”. For instance if tolerance is 2, then a setting of 30 psi will be

 

considered “At Pressure” from 28 to 32 psi. Suggested setting is 2.

Transducer Type This value depends on the kind of pressure transducer used on the system. Table

4.1gives the transducer type number to use with various transducers. Contact Link for others. Note that the used pressure range is typically half the actual pressure range of the transducer. This allows the transducers to better survive pressure shocks that may occur in operation.

 

Table 4.1: Transducer Types

 

Manufacturer /

Transducer

Used

Output

Trans

Model

Pressure

Pressure

 

Type

 

Range

Range

 

 

Any / Any

0-250psi

0-125psi

4-20ma

3

Any / Any

0-200psi

0-100psi

4-20ma

4

Any / Any

0-300psi

0-150psi

4-20ma

5

Any / Any

0-400psi

0-200psi

4-20ma

6

Valve Type

This parameter only appears when a hydraulic overload is being configured.

 

For hydraulic overloads controlled with “0-10Volt Out” proportional voltage,

 

refer to table 4.2 for the proper control type based on the servo-valve used to

 

control the system.

Table 4.2: Servo-Valve Control Types

 

Manufacturer / Model

Pressure

Input

Control

 

Range

 

Type

Wilkerson ER1 Series

0-125psi

0-10V

4

April 17, 2000 Man ual Versio n 1.0

4.6

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SMC Networks 5000 manual Fault Time, Tolerance, Transducer Types, Valve Type, Servo-Valve Control Types

5000 specifications

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