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7.7. CONTROLLER FUNCTION (12410 MODEL ONLY)
The 12410 model Level Controller is a Level measurement instrument which includes a built-in PID controller function to
directly and locally control a level control loop. It has been specifically designed to retrofit pneumatic level control loops or
enable an easy and cost-effective solution to perform a local and independent level control loop.
The controller function is available on device revision Firmware 113 or later.
The controller function is not included in the scope of the SIL certification. Only the transmitter function is SIL certified.
7.7.1. INSTRUMENTS INPUTS/OUTPUTS
♦ The 4-20 mA analog output signal, available on AO_1 terminals, is the controller output signal generated by a PID algorithm
based on error between the local setpoint and the level process variable. HART communication is available on AO_1.
♦ The 4-20 mA analog output signal, available on the AO_2 terminals, is the level or interface measurement signal. No HART
communication.
♦ DO_1 and DO_2 terminals are two independent isolated digital switch outputs. They are user-adjustable and polarity
sensitive.
7.7.2. CONTROLLER ACTIVATION
The activation of the controller function can be performed in the Advanced Setup menu trough the push-buttons or ValVue
suite software only.
IMPORTANT
The Controller function can be activated only if it has been ordered initially. You cannot add it later on site (see
numbering system Section 3.2).
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