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Troubleshooting

5-2 SVP Controller Operation Manual Part No.: 44200004 - Revision 2

5.2.3 Sensor stuck

This error message means that one of the sensors is triggered and is

sending the signal to controller at the beginning of the proving run. To clear

the error check if:

 the optical switches are functioning (using the dashboard function –

see 5.3.1),

 ensuring that the ﬂag is not triggering one of the optical switches

(if repositioning is required user can use dashboard function – “Motor

run command” to relocate the piston assembly),

 motor stop switch is functioning (using the dashboard function –

see 5.3.1),

5.2.4 Service due

The prover is due for service as determined by the entry at Main Menu/

Conﬁguration/Alarms/Service Due Reminder.

5.3 Diagnostics

There are several screens inside the Main Menu/Diagnostics menu to aid

in troubleshooting.

5.3.1 Dashboard

The dashboard screen allows you to verify the status of the inputs and

outputs of the SVP Controller. Each output function can be tested by

selecting it and activating it.

Dashboard

Down Sensor High Alarm Output Inactive

Middle Sensor High Alarm Clear High

Up Sensor High

Motor Stop Switch High

Motor Run Inactive

Optical Pulse Inactive

Run Permissive High

Handheld (OK/?)

Bypass Valve Inactive

Draw Valve Inactive

Press OK to change values Stop

A properly functioning optical switch will normally indicate “High” at the

dashboard screen. Inserting an opaque ﬂag into the optical switch will

cause the state to change to “Low”.

Honeywell Enraf User Manual

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