ADVANCED TECHNICAL MANUAL Part #: 265888 Universal Control Card Form# E-UCCMAN1012
Part #: 265888 Universal Control Card A d v a n c e d Te c h n i c a l M a n u a l TABLE OF CONTENTS PRODUCT OVERVIEW................................................................................................................................................................. 3 FEATURES..................................................................................................................................................................................... 3 CONTROL MODES..........................
Part #: 265888 Universal Control Card A d v a n c e d Te c h n i c a l M a n u a l PRODUCT OVERVIEW Envirco’s ENV1028 Universal Control Card provides MODBUS network and analog control capabilities to an Envirco Fan Filter Unit equipped with an electrically commutated motor. Three different control modes provide installation versatility by allowing the FFU to be controlled via MODBUS RTU network, analog 0-10 VDC control signal, or by adjusting the onboard potentiometer.
Part #: 265888 Universal Control Card A d v a n c e d Te c h n i c a l M a n u a l CONTROL MODES The ENV1028 operates in one of three selectable modes. The Mode is selected using DIP Switch S1.
Part #: 265888 Universal Control Card A d v a n c e d Te c h n i c a l M a n u a l Manual Control Mode: In Manual control mode, the motor speed is set using the onboard potentiometer. Onboard potentiometer rotation is CW to increase the motor output. Analog Control Mode: In ANALOG control mode, the motor output is set using an external 0-10 VDC demand signal. Network Control Mode: In NETWORK control mode, the motor output is set using MODBUS Register 2.
Part #: 265888 Universal Control Card A d v a n c e d Te c h n i c a l M a n u a l ELECTRICAL SPECIFICATIONS Control and Interface Signals: 1. External Speed 0-10V Input • Input impedance 20k Ohms. • MIN ON-to-OFF threshold: 190mV* • MAX OFF-to-ON threshold: 240mV* • ON (~215mV) to 9.89V linearly scales 1 to 99% speed. • 9.89V or more deadbands to 100% speed. 2. External LED Output • 10mA regulated • LED forward voltages up to 5V 3.
Part #: 265888 Universal Control Card A d v a n c e d Te c h n i c a l M a n u a l COMMUNICATION SPECIFICATIONS Overview: • MODBUS RTU protocol over RS485 (serial) • 9600 baud rate, word length is 8, parity is none(n), stop bits=1 • 255 unique address values selectable by DIP switch settings • (recommended network node capacity 200 nodes) • Slew rate limited transceivers for improved network performance MODBUS Register Summary Table • DO NOT USE CROSSOVER CABLES.
Part #: 265888 Universal Control Card Clean air solutions built for you. M O R E I N F O R M A T I O N A V A I L A B L E A T W W W . E N V I R C O .
