ADVANCED TECHNICAL MANUAL
Part #: 265888
Universal Control Card
Table of Contents
Part #: 265888
Universal Control Card
ADVANCED TECHNICAL MANUAL
PRODUCT OVERVIEW..............................................................................3
FEATURES............................................................................................3
CONTROL MODES....................................................................................4
ELECTRICAL SPECIFICATIONS.................................................................6
Test Probe Jacks......................................................................................6
LED Indicators..........................................................................................6
Signal Details...........................................................................................6
RJ-45 Network Cable Connections......................................................6
COMMUNICATION SPECIFICATIONS......................................................7
Overview...............................................................................................7
MODBUS Register Specifications............................................................7
Universal Control Card
Part #: 265888
Universal Control Card
ADVANCED TECHNICAL MANUAL
PRODUCT OVERVIEW
Titus’s ENV1028 Universal Control Card provides MODBUS network and analog control capabilities to a Titus 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. The
ENV1028 Universal Control Card is fully compatible with all of Titus’s plug & play System Control Consoles using MODBUS RTU.
Additional details of the controls modes are provided on page 4.
FEATURES
• Networkable Via MODBUS RTU
• 0-10 VDC Analog Control
• Manual Control Via Onboard Potentiometer
• Simple Connections
• RJ45 For Networking Connection
• Screw Terminals For Analog Control
• Test Probe Jacks For DC mV Signal Output Of The Following:
• RPM
• Motor Control Set Point
• LED Diagnostics
• Support for external LED (10mA) remote status notification via 2 Pin MTA connector
• Onboard green LED for Board Status notification
• Onboard red LED for Network Traffic
• Powered from Network or Local Supply
INCOMING POWER 24VAC
COMMON
DUAL RJ-45 JACKS FOR CAT 5 CABLE
RED LED FOR NET ACTIVITY
GREEN LED FOR SYSTEM/RPM STATUS
RPM TEST PROBE JACK "SIGNAL"
MANUAL SPEED POT
LED CONNECTOR
CONTROL HARNESS CONECTOR
CONTROL DIP SWITCH
11 23 45 67 82
ANALOG INPUT "COM"
ANALOG INPUT "SIGNAL"
RPM TEST PROBE JACK "COM"
ADDRESSING DIP SWITCH
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A D V ANCE D T E CHN I CAL MAN U A L
CONTROL MODES
The ENV1028 operates in one of three selectable modes. The Mode is selected using DIP Switch S1.
• MANUAL control, on-board potentiometer
• ANALOG control, Remote 0-10 VDC
• NETWORK control, MODBUS RTU
Manual Mode = 1 OFF 2 OFF
Part #: 265888
Universal Control Card
ON ADE02
1 3 4 5 6 7 8
O
N
1
2
Analog Mode = 1 ON 2 OFF
ON ADE02
1 3 4 5 6 7 8
O
N
1
2
Network Mode = 1 OFF 2 ON
ON ADE02
1 3 4 5 6 7 8
O
N
2
2
2
1
2
Network Mode = 1 ON 2 ON
ON ADE02
1
2
Note: Network mode can be using either DIP switch setting shown above.
1 3 4 5 6 7 8
2
O
N
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Part #: 265888
Universal Control Card
A D V ANCE D TECHNICAL MANU 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. Motor output is specified as a value from 0 to 100
representing a percentage of motor torque output. Each ENV1028 in a MODBUS network must be set to a unique address. The address
value is set in binary using the eight DIP switches of switch bank (S2). A maximum of 200 ENV1028 devices is
recommended per local area network(LAN). If an Titus ACC Control Console is the MODBUS master, then addresses should be
assigned within the address range supported by the Control Console. Address zero should not be used as it is reserved for global
commands. Ad-dress switch settings are only checked by the ENV1028 at power-up. Power must be cycled (OFF/ON) before
affected changes take place.
ON ADE02
1 3 4 5 6 7 8
O
N
1
2
Control Mode
DIP Switches
Registers relevant to this mode:
• Register 1 “Start/Stop” (R/W)
– To enable motor, write a value of 1; To disable motor, write a value of 0
• Register 2 “Motor Set Speed” (R/W)
– Motor Target speed value. Values may be written from 0 to 100
• Register 6 “RPM” (R)
– Motor RPM. Read from the motor
• Register 12 “Actual Motor Speed Instruction” (R)
– Speed control signal applied to the motor by the ENV1028.
(R/W) = Read/Write, (R) = Read Only
2
Addess DIP Switches
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Part #: 265888
Universal Control Card
ADVANCED TECHNICAL MANUAL
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. RPM Signal
• Signal Value: mVDC = RPM
• Ex: 900mV = 900RPM
• RPM Output Range: ~ 0, 5 to 2000 RPM (0, 5mV to 2000 mV DC)
• RPM Output Resolution: 5RPM (Zero, 400 steps from 5 to 2000 RPM inclusive)
Electrical and Environmental
Specification
Input Voltage
Supply Frequency
Input Power Consumption
Ambient Operating Temperature
Test Probe JacksPoints:
The test probe jacks may be used to measure the motor rpm or the PWM signal that is being output to the motor.
• In Manual or Analog Control Mode with an Address setting of 1 or greater, the test probe jacks output 0-2000 mVDC representing
motor RPM. By changing the address DIP switches to 0, the test probe jacks will output 0-1000 mVDC representing
0-100% demand signal to the motor. The address may be changed without interrupting power to the control card.
• In Network Control Mode, 0-2000 mVDC always represents RPM.
LED Indicators:
• Onboard Status LED:
The Onboard Status LED is software controlled by the unit microcontroller. The Status LED is solid ON when RPM reported by
the motor is greater than zero and OFF when RPM reported by the motor is zero.
• External Status LED:
Support for an external Status LED (10mA current-controlled driver), via a 2-pin MTA connector, for remote system status notification.
The external Status LED operates in the same manner as the Onboard Status LED.
• Onboard Net LED:
The Onboard Net LED is driven directly by the receive data signal. The NET LED shows all network traffic on a 2-wire network.
The NET LED is intended to confirm low-level network connectivity, independent of microcontroller or firmware functionality. If
A/B network wires are swapped, the NET LED will be normally on, providing quick diagnostics of this common condition.
Min
22
50
na
0
24
50/60
na
25
Max
42
60
0.5
50
UnitsTypical
VAC
Hz
VA
C
Net LED Status Definition
LED OFF
LED Flickering
LED ON
RJ45 Network Cable Connections:
Power Lost or No Communications
Network Data Traffic In Progress
A/B network wires are swapped
Red Network LEDG reen Status LED
1 2 3 4 5 6 7 8
Bus Power
Pass Through
0V (GND) RS-485 0V (GND) Bus Power
+
NC NC -
Universal Control Card
Pass Through
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Part #: 265888
Universal Control Card
A D V ANCE D TECHNICAL MANU 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. THIS MAY DAMAGE THE CONTROL CARD OR RENDER IT NON-OPERATIONAL.
MODBUS Register Specifications
Register Name R/W Values & Defaults Units Origin Comments
1 RUN/STOP RW 0,1 1 RAM power up from REG 14
2 DEMAND RW 0-100 % RAM power up from REG 10
6 SPEED R 0,5-2000 RPM LIVE
7 ANA1 R 0-1000 - LIVE Onboard Pot 0-1000=0-100%
9 STATUS R see detail - LIVE
10 DEFAULT SPEED RW 0-100 50 EEPROM applies to network only
12 CURRENT SPEED R 0-100 - LIVE
14 DEFAULT RUN/STOP RW 0,1 1 EEPROM applies in network mode only
24 ANA2 R 0-1000 - LIVE 0-10V input 0-1000=0-10VDC
To reset non-volatile registers to factory default values, write 170 (AA hex) to Register 14, and then cycle power.
Note: Register 24 may be read in network mode to determine the value of 0-10VDC signal that may be connected.
For example, a pressure transducer may be connected to indicate unit interal static pressure.
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