Download POU 3300 with PSC - LAUDA-Noah

Noah Precision, LLC
LEDs
There are four LEDs on the front of the power supply/controller. The Heat LED indicates
that the power supply is heating. The Cool LED indicates that the power supply is
cooling. The Pump LED indicates that the pump's power supply is on. The Idle LED
indicates that the pump’s power supply is off. LEDs are especially useful when viewing
several controllers in a controller rack.
EMO Input
If a controller needs servicing, the EMO keylock on the front panel of the controller
disables the EMO feature. An open on this input shuts down system power. (If the unit
does not connect to the host EMO, both in and out connections must be jumpered.)
To service, disable the EMO on the Power Distribution Box to prevent the host tool from
shutting down.
Be sure to disable each controller’s EMO feature with the keylock. When the LED
labeled EMO Disable is on, the EMO is disabled. This prevents the other controllers
from shutting down when the EMO link is disconnected.
Alarm Inputs
WARNING INPUTS
The LIQUID LEVEL #1 alarm indicates that the process fluid is below normal level.
The LL1 alarm switch is closed when the process fluid is at acceptable levels. It is an
informational alarm, with RS-485 communications with 100 mV/oC analog
communication, this is a soft alarm.
The LIQUID LEVEL#2 alarm responds differently depending on the communication
protocol of the host tool. With RS-485 communication, this alarm is a soft alarm for 15
minutes, then becomes a hard alarm (failure). With 100 mV/oC analog communication,
the Liquid Level #2 alarm is always a hard alarm.
INPUTS THAT CAUSE SHUTDOWN (HARD ALARMS)
The Model 3300 has six inputs for safety.
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RTD Inputs (process fluid and facility water)
LIQUID LEVEL #2 (100 mV/oC analog tools only) (switch)
OVER TEMPERATURE (switch)
UNDER TEMPERATURE (switch)
PROCESS FLOW
Each input is monitored. If a switch opens or an alarm condition occurs, the
microprocessor is alerted and an alarm appears on the controller display. If more than one
of these safety alarms is active, alarms are displayed in the order they occur.
6-2
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