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Instruction Manual
HASAxE-IM-HS
05/2006
1-20 Emerson Process Management GmbH & Co. OHG
1-8 Optional Interfaces
Inputs IN4 to IN7 are evaluated in decreasing
order of priority: highest priority within this group
is assigned to IN4, lowest priority to IN7.
Applying a HIGH signal to an input while all
inputs of higher priority are at LOW level opens
the associated valve and closes all other valves,
regardless of the inputs of lower priority.
IN7 has a converted input logic: applying a
LOW signal opens valve V3; a HIGH level
signal closes ALL valves.
1-8-2-2 Valve Control
Action / Input IN4 IN5 IN6
IN7
Open valve V4 HXXX
Open valve V1 LHXX
Open valve V2 LLHX
Open sample gas valve LLLL
Close all valves LLLH
H: HIGH
L: LOW
X: don't care
Table 1-1: Digital Inputs IN4-IN7, array
1-8-2-3 Remote Pump Control
Input IN7 may be used to control the optional
internal sample gas pump: applying a LOW
signal switches on the pump, a HIGH level
signal switches off.
Pump control depends on the IN7 input only
and is independent of inputs IN1 to IN6!
Note!
Pump control via digital input IN7 requires the
parameter "PumpControl" in the IN/OUT-
PUTS SETUP menu set to Remote (
5-4-3-4, page 5-33)