Black & Decker DCM200C Guía de instalación descargar pdf (Pagina 26)

DCM 200 Installation

Page 26

PID Time Modulation: Relays 1-5

Application: Time Modulation applications where additional variable loading control is needed

like extremely variable bather loading.

Setup: User selects a relay & selects Special Control = PID Control

User sets Relay Period in seconds, as in Time Modulated control, minimum 60

(recommended), default= 120, maximum is 600 seconds.

User sets Kp Proportional factor for correction to deviation from setpoint.

User Sets Ki Integral factor for correction for loading.

User Sets Ki updated time for how often checks are made for loading correction.

User Sets Kd Differential factor for corrections due to quick sensor changes.

User Sets Kd updated time for how often checks are made for quick sensor changes

Operation: See PID Appendix for detailed setup explanation.

6. Sensors

6.1. Compensation

Analog Sensors A..C

Type

Setup

Notes

Thermal

(pH)

Temperature sensor C.

Defaulted as OFF

(see note below)

Applied to pH sensors.

Zero compensation at 7 pH.

Compensation adjusts sensor gain (slope)

+0.00467%/°C above 25°C & -0.0058%/°C below

25°C

pH thermal compensation can only be applied to

directly connected pH sensors and not to

4-20mA inputs which may represent pH.

Rate

Volume

Water meter F displays and

logs resulting volume.

User selected rate/minute

or rate/hour

Can be used to show turnover rate of main pool.

Calculated

LSI and Ryznar’s indices Used on Virtual input D

Note: pH thermal compensation is seldom used in pools and spas since the pH is typically

between 7 & 8 and the temperature fairly stable, so the effect of thermal compensation is limited to

the third decimal place.

6.2. Digital Input Sensor F

Switching from Contact Set to Water Meter clears the log on the switched input.

Type

Setup

Notes

Contact Head

[not typical in

Aquatic

applications]

User set volume/contact

Contact Head compensation turns ON software de-

bouncing. Volume counts on contact closure.

Contact opening ignored. Not normally used in Pools

and Spas.

Turbine or

Paddlewheel

User set ‘K’ factor, pulses/unit

volume

Counts pulse on falling edge, 400Hz max.

Ignores rising edge. Typical pool and spa circulation

flow meter sensors. (must be 12VDC powered

square wave sensors)

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Black & Decker DCM200C Guía de instalación Pagina 26

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