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7.3.3 Description of Potentiometer
7.3.3.1 Potentiometer P1 / Steam Generation Output
Limitation
The control includes a Potentiometer P1 for setting the steam genera-
tion output limitation. Using the steam generation output limitation, the
steam output can be set to a value between 25% and 100% of nominal
output.
Limitation of steam output may be required for better control.
7.3.3.2 Potentiometer P2 / Pump Run Time
The control includes an additional Potentiometer: Potentiometer P2.
This is used to set the pump run time during partial blow-down. The
Potentiometer is properly set to the delivered humidifier type.
Depending on water quality, resetting the pump run time may be advis-
able. The following may apply:
very high conductivity of feed water = longer pump run time
very low conductivity of feed water = shorter pump run time
Please get in contact with HygroMatik before modifying this parameter.
7.3.4 Potentialfree Outputs
The rated load of the relay contact is 250V/8A.
7.3.4.1 Collective Fault - Base Relay
The Basic-DS Control is normally supplied with a base relay pro-
grammed for a collective fault i.e. the base relay is triggered in case of
a malfunction. The potentialfree contact is shipped as a two-way con-
tact.
The connection terminal is located on the main PCB (normally closed
contact: connection terminals 28 and 30; normally open contact: termi-
nals 28 and 29).
The switching signal which switches over the base relay may be modi-
fied using Parameter E5 if an optional available LC-display is con-
nected to the board instead of the normal Basic display.
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