Discrete Input Function Block (Di1 + Di2) - Samson 3730-5 Configuration Manual

FOUNDATION™ fieldbus parameters
7.3.4

Discrete Input Function Block (DI1 + DI2)

The DI Function Block processes single discrete signals and makes them available to other func-
tion blocks with the OUT_D parameter. The positioner has two DI Function Blocks which provide
the application options described below. The type of application is set over the SELECT_
DI_1...2 parameters of the RES Block.
• 5 – 30 VDC (DI1)
The positioner is fitted with a standard contact input to process binary voltage signals
(terminals 87 and 88). The Discrete Input DI1 Function Block processes the contact state
and makes it available over OUT_D.
• Floating contact (DI2)
The positioner is optionally fitted with a binary input to process a floating contact (termi-
nals 85 and 86). The Discrete Input DI2 Function Block processes the contact state and
makes it available over OUT_D.
When a pressure sensor (leakage sensor) is connected, its switching state can be issued
as a diagnostic alarm in the XD_ERROR_EXT parameter of the AO Transducer Block and
included in the logging. In this case, either the option Actively Open – Ext. Leak. Sens. or
Actively Closed – Ext. Leak. Sens. must be selected in the CONFIG_BINARY_INPUT2 pa-
rameter. Additionally, the switching state of the binary input is issued in the BINARY_
INPUT2 parameter of the AO Transducer Block.
• Int. solenoid valve (DI1, DI2)
In this setting, the current switching state of the optional internal solenoid valve is read
out and made available over OUT_D. The value '0' corresponds to a de-energized sole-
noid valve (U < 15 V DC) and the value '1' to an energized solenoid valve (U >
19 V DC).
• Discr. final valve position (DI1, DI2)
In this setting, the current discrete valve position is made available over OUT_D. The
values are assigned as follows:
0 Device not initialized
1 Valve closed
2 Valve open
3 Valve in intermediate position
• Condensed state (DI1, DI2)
In this setting, the current condensed state according to NAMUR Recommendation
NE107 made available over OUT_D. The status messages are assigned to the discrete
value as follows:
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KH 8384-5 EN