Carel FCP/1, Руководство пользователя, Страница: 7 / 40

FCP manual
Code +030220391 – rel 1.1 07/11/06 7
1. Introduction
The FCP device is a phase control voltage regulator with microprocessor control that is especially suitable for controlling the speed of condensing fans, according to
the required pressure/temperature. Alternatively it can be used to control the voltage/power to a resistive or inductive device with a quadratic relationship between
load voltage/power.
Two models are available.
- the first is a controller complete with all the functions;
- the second includes the power functions only, and can be used to double the total power available, acting as a slave to the complete controller. Alternatively, it can
serve any Carel controller that features a specific phase control output (MCH*, PCO*, …).
FCPM082010 Controller;
FCPM082A10 Power
expansion.
1.1 Main features
Power supply
The power supply is 230 Vac 50/60Hz mains, with automatic adaptation to the mains frequency.
Appearance and ergonomics
The device has been designed so as to also allow outdoor installation, with specific protection against water and dust.
Management of two circuits
Two circuits can be controlled in parallel, based on the more critical conditions.
Pressure or temperature probes
The following can be used indifferently, by making the suitable settings:
ratiometric pressure probes powered directly by the controller
NTC temperature probes with different operating ranges
Manual setting or configuration by parameter
The operation of the FCP controller can be set as follows:
- manually, using the trimmers and dipswitches (restricted to the main functions);
- using the internal parameters (via programming key or serial line).
In the first case, the main functions are available for the simple use of the controller and setting by non-specialist personnel.
In the second case, the available functions are increased considerably, allowing maximum operating flexibility.
Control set point and differential
Two set points are available, which can be selected externally, so as to be able to differentiate the operating conditions based on the time of day or a change in
situation in general.
Minimum and maximum output
This function is used to set the range of variation of the output and consequently the fan speed, so as to define the minimum possible speed and maximum acceptable
noise, depending on the fans used and specification the application.
External alarm management
This is used to force the output to a preset value when a protector is activated or upon receiving an external control signal.
Cut-off
This function is used to stop the fans, resetting the output, when the controlled pressure/ temperature is below a preset value.
Speed-up
This function is used to overcome the inertia of the fans, operating them momentarily at high speed and then slowing down to the actual speed calculated by the
controller, allowing very low speed that otherwise could not be achieved when starting from standstill.
Output saturation
This function, irrespective of the speed settings, operates the fans at the maximum speed allowed by the mains voltage when the controlled pressure/temperature
exceeds a preset value.
Outside temperature compensation
This function is used to predict the effects of the variation in the outside temperature (air that cools the condenser), by measuring the outside temperature and acting
as a consequence (feedforward action), even before the controlled pressure/temperature is affected.
The function is especially useful when control is performed using the temperature rather than the pressure, as temperature probes are intrinsically slower to respond
than pressure probes.
PI control (proportional and integral)
This function combines normal proportional control with an integral action that, if correctly set based on the specific operating conditions, allows more accurate
pressure/temperature control.