Samson 3738-20 Mounting And Operating Instructions page 5

Firmware revisions
Firmware Revisions
1.12 Changes to parameters and error messages (see section 13)
• Parameters renumbered due to parameters being added or removed.
Removed parameters:
– 'PST initialization' (the partial stroke test no longer needs to be initialized).
– Info: Rotary motions
New parameters:
– 'Actuator type' (rotary or linear actuator). See section 8.3.
– 'Switching function of contacts' (NO or NC contact). See section 8.5.
• Error messages renumbered due to error messages being removed.
Removed error messages:
– 'PST target range not reached'
– 'PST target range exceeded'
• The new parameter 'Actuator type' as well as the 'Actuator's direction of action' pa-
rameter are locked after the electronic limit switch has been initialized. See sec-
tions 8.3 and 8.4.
• The actuator transit time monitoring (F4) depends on the value adjusted in 'Status
readout for actuator transit time (P13). This is adjustable between 0 (OFF) and 1800 s.
• The dead time is already included in the information parameters 'Actuator transit time
when the solenoid valve is de-energized' and 'Actuator transit time when the solenoid
valve is energized'.
• The monitoring of the rotary motion counter can be deactivated by configuring 'Maxi-
mum rotary motions' (P26) = OFF.
Changes to the partial stroke test (PST) (see section 9.2)
• The minimum pulse length at contact C is three seconds during partial stroke testing.
• The PST target range is made up of 'PST step end (P14) ± ½ 'PST tolerance band'
(P15).
• Once a partial stroke test has been completed, the assessment of the transit times when
the solenoid valve is de-energized and energized ('PST transit time when the solenoid
valve is de-energized' and 'PST transit time when the solenoid valve is energized').
Only the duration of the entire test is shown in version 1.01.
• In the TROVIS-VIEW software, a diagram plotting the valve position against time while
the solenoid valve is de-energized and energized is shown (256 measuring points).
The data can be read out by connecting the device at the SSP interface to a computer.
EB 8390 EN 5