Today is...
Thursday, July 28, 2016
Welcome to Control.com, the global online
community of automation professionals.
Featured Video...
Featured Video
EtherCAT with CTC’s master lets your multivendor network play well together...
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Forum Archive
1
reply
Protect a 21V 2.4A DC system from an AC input
Posted by mike on 12 March, 2013 - 6:24 am
Is there a way to protect a 21V 2.4A DC system from an AC input using a fuse?
1
reply
Modbus Meter PM710 to Zigbee Jennic JN5148
Posted by luah on 12 March, 2013 - 6:22 am
I would like to transmit data from Schneider Power Meter PM710 to Jennic JN5148 devices.
3
replies
Battery operated screw driver
Posted by mike30 on 11 March, 2013 - 8:28 am
Fixing a led. into the charging circuit of my battery operated screw driver.
6
replies
Drum level control by two element
Posted by atish on 11 March, 2013 - 4:53 am
What is cascade control & explain two element in simple language?
1
reply
Open Circuit Calculations
Posted by Jerry on 10 March, 2013 - 6:16 pm
Transformer short circuit and open circuit calculations on primary end
2
replies
why CPD is increasing?
Posted by me on 10 March, 2013 - 6:23 am
Why cpd is increasing & how it is possible that at same speed cpd is increasing?
8
replies
measurement of pulp level
Posted by raj on 10 March, 2013 - 1:11 am
Measurement of pulp level using capacitance based DPT.
GT Frame 9E Axial Position
Posted by SB on 9 March, 2013 - 10:30 am
Please share your experience regarding the Axial position of 9E machine, if value is in minus figure what does it mean and if value in positive figure what does it denote?
2
replies
Accessing Siemens PLC
Posted by John on 9 March, 2013 - 2:29 am
Need to gain access to Siemens Simatic PLC SZ model TD-200 without original program or password
4
replies
Purging air
Posted by me on 8 March, 2013 - 4:55 pm
where the air comes for purging when starting up the FR-6 ALSTOM GTG?
1
reply
Programming PLC using Open Source software
Posted by Rupak Rokade on 8 March, 2013 - 5:42 am
Programming PLC using Open Source software
8
replies
Why use HART Protocol rather than Fieldbus in some applications?
Posted by Mirza Vaseem Raza on 8 March, 2013 - 12:13 am
Why HART Protocol is used in DCS rather than Fieldbus in some applications?
2
replies
choosing proximity sensors for level detection
Posted by Sameera on 7 March, 2013 - 9:13 pm
I need to choose a proximity sensor for liquid level detection. But the detecting diameter should not exceed 10mm
Steam Turbine rotor studdenly stops after running on barring gear
Posted by mahendra on 7 March, 2013 - 8:14 pm
Steam turbine of 40 MW is running on barring gear after unit stopped.
3
replies
3-Phase unbalanced power calculation
Posted by EE on 7 March, 2013 - 4:20 pm
Looking for a way to verify heater elements power with measured voltage and impedance
3
replies
generating Hook-Up drawings for field instruments
Posted by Adeyinka Adekanmi on 7 March, 2013 - 3:02 pm
Material For preparing Hook up drawings
5
replies
Efficiency of ac generators
Posted by UNGKU KAMAL on 7 March, 2013 - 1:12 pm
When using ac generators in Power Stations, what are the advantages of using " Flux Cutting " types, compared to using " Magnetic Induction " types.
2
replies
Transmitting a Digital Signal without an Analog Carrier Signal?
Posted by Mirza Vaseem Raza on 7 March, 2013 - 1:14 am
Can a Digital Signal be transmitted without using a Carrier Signal (Analog)?
6
replies
Is there any difference in signal transmitted in HART and Fieldbus or not?
Posted by Mirza Vaseem Raza on 6 March, 2013 - 4:49 am
Is there any difference in signal transmitted in HART and Fieldbus or not?
8
replies
Implementing PID Controller with C++
Posted by tvlas on 6 March, 2013 - 3:28 am
Question about how a PID Controller might be implemented in C++. How to go from continuous to discrete signal in C++?
1
reply
Woodward 505 Governor did not switch over during grid failure
Posted by Amit Das on 6 March, 2013 - 2:22 am
during grid failure our generator automatically was not switch over to frequency control mode to load control mode - woodward 505 governor.
Connecting to a B&R PLC
Posted by Shahab Ahmad on 6 March, 2013 - 1:30 am
Can we get data from B&R PLC's RS232 Port other than CAN port
11
replies
Bristol with ifix / DPC to Controlwave conversion
Posted by Mitch S on 5 March, 2013 - 10:36 pm
Looking for someone with experience migrating from a DPC 3330 as a "data concentrator" to a Controlwave Micro with ifix and the BR3 Driver.
1
reply
Delta V Training material...
Posted by jim fahey on 5 March, 2013 - 9:03 pm
Looking for Delta V training materials...
2
replies
Communication issue between c264 rtu & ion 7550 meter
Posted by Noor ul ameenulnoor on 5 March, 2013 - 1:33 pm
Communication loss between ion 7550 meter& c264 rtu
Problem with RYE CNC
Posted by Irina on 5 March, 2013 - 4:36 am
RYE CNC 1995 Controller BOSCH CC100M Version S22C
COMMUNICATION IN YOKOGAWA CENTUM CS DCS
Posted by Mihir Ramkrishna on 5 March, 2013 - 4:01 am
Want to change from Redundant to Non Redundant communication in ACM 11 and ACM12 of Centum CS DCS
2
replies
Bearing Temperatures
Posted by Owais on 5 March, 2013 - 2:21 am
Bearing Temperatures hunting
hydrogen pressure vessels
Posted by Ayed on 5 March, 2013 - 2:14 am
We are looking what is the suitable facility to purge these vessels in order to attend the thickness measurement and relief valve calibration.
2
replies
Line Monitoring
Posted by Ramesh on 4 March, 2013 - 2:25 pm
Line Monitoring Needs and How it works
2
replies
University courses in Canada
Posted by Justin S on 4 March, 2013 - 9:31 am
looking for some direction on continuing education
1
reply
Proview - modbus
Posted by JoŽl van As on 4 March, 2013 - 5:59 am
Proview (Scada system) - Modbus (tcp)
3
replies
Generator selection
Posted by Generator on 4 March, 2013 - 2:10 am
we have source of air flow app. 1000 rpm .Pl. suggest suitable single phase alternator for the same.
2
replies
Modbus communication problems when using other RS485 chip
Posted by zenniz on 4 March, 2013 - 1:22 am
Modbus communication rs485 problem
6
replies
modbus reading not actual
Posted by Ahmed El-dosoky on 4 March, 2013 - 12:17 am
Not getting real values and rapid changing Modbus reading from Allen Bradly PLC
1
reply
Adding Pyrometers to an assembly line
Posted by Halo on 3 March, 2013 - 3:01 pm
Incorporating Pyrometers into an assembly line
9
replies
T/C extension wires
Posted by d- on 3 March, 2013 - 1:14 pm
use of neutral extension wires in industrial temperature measurement
Counter in NAIS PLC
Posted by David Brown on 3 March, 2013 - 10:02 am
Configuring a counter in a NAIS PLC
1
reply
Communication between Modicon 984-145 and CEV 300 10
Posted by Jackie on 2 March, 2013 - 11:47 pm
Trying to establish communication between Modicon 984-145 and CEV 300 10 modbus and Ethernet bridge
1
reply
Synchronization manually
Posted by Sriram Surya on 2 March, 2013 - 9:00 pm
In GE 9fa machine with DLN 2.0+ during synchronization how to observe phase angle in the synchronization Screen.
3
replies
Rosemount Level transmitter Trouble
Posted by Benjamin on 2 March, 2013 - 6:19 am
Why are my Rosemount 3100 Level transmitter readings seem wrong (Lower than expected) even when my tank level is high?
Detection of finger movement
Posted by Jolini on 2 March, 2013 - 1:46 am
A type of sensor to detect the movement of each individual finger
Monitoring DeepSea DSE 7310 with Citect
Posted by Chrisman on 1 March, 2013 - 10:45 pm
DSE7310 always offline at Citect
6
replies
GE 9FA gas turbine Excitation Control
Posted by Sriram Surya on 1 March, 2013 - 4:36 pm
why the Excitation Regulator Control is in Manual during start up to 85% speed later changing to Auto control.
Structure Programming Motor DBs
Posted by nicer on 1 March, 2013 - 2:07 am
In Siemens structured programming, should I *not* make the motor DBs retentive?
4
replies
Triple IR Flame Detector
Posted by Mirza Vaseem Raza on 28 February, 2013 - 11:17 pm
Please somebody explain the principle of a Triple IR Flame Detector.
1
reply
SCR current draw
Posted by DEC on 28 February, 2013 - 4:41 pm
Calculating current draw on an SCR controlling IR heaters
3
replies
induction generator
Posted by Rahul on 28 February, 2013 - 1:41 pm
Operation of induction generator
4
replies
Loose Contact in MARK V Control System
Posted by ankarao on 27 February, 2013 - 11:06 pm
9E GT trip with all protection and shutdown alarms
2
replies
MK5make does not compile
Posted by vcegce on 27 February, 2013 - 3:05 pm
MK5MAKE does not recompile, 4241 errors.
1
reply
Gas Turbine humming problem
Posted by Frixos on 27 February, 2013 - 1:24 pm
Humming of gas turbine during start up
5
replies
Mark V 125vdc Surge Protection
Posted by Barry Thomas on 27 February, 2013 - 11:37 am
Mark V 125vdc Surge Protection
selection of valve- Ball and pluge
Posted by Litto on 27 February, 2013 - 3:52 am
When do we install a plug valve and when a ball valve?
Ingress Protection
Posted by Log on 27 February, 2013 - 3:05 am
Ingress Protection
Role of Industrial Drives as Control System Components
Posted by Rushi Shroff on 27 February, 2013 - 1:29 am
Application of drives as final control elements
2
replies
ISA 100.11a and IEEE 802.XY Standards
Posted by Cris on 27 February, 2013 - 1:14 am
What are the main differences between the ISA 100.11a and the IEEE 802.XY standards?
4
replies
Generator 277/480
Posted by Chris on 26 February, 2013 - 10:04 pm
What reading should I get with ohm meter phase to phase on output breaker with fluke 87 ohmmeter
6
replies
Require HMI for -40C to +50C Operating Temperature
Posted by Wayne Lee on 26 February, 2013 - 1:45 pm
We require an HMI (touch screen computer), for extreme operating temperatures of -40 deg to +50 deg. Can anyone recommend from where to get this?
Help for a Design Engineering Student - spray coating forging and forming samples
Posted by John Storr on 26 February, 2013 - 5:05 am
Help with mechatronic design for a system for spray coating forging and forming samples.
2
replies
Using ABB EtherCAT system's distributed clocks concept
Posted by Edwin on 26 February, 2013 - 12:40 am
Does ABB EtherCAT system support the distributed clocks concept (DC) for synchronization of local clocks in the EtherCAT components?
Siemens CP5611
Posted by Gavin Bennett on 25 February, 2013 - 10:43 pm
Using a cp5611 profibus card with Windows 7 OS
8
replies
Meaning of DC (designated controller) in RST mark 6e
Posted by Controman on 25 February, 2013 - 5:48 pm
What specificity does R controller have with the DC LED?
1
reply
Yokogawa Centum CS upgrade to Centum VP
Posted by dinster on 25 February, 2013 - 5:28 pm
Upgrading from Centum CS UNIX to Centum VP Windows environment.
Converting Yokogawa Centum CS3000 Trending File
Posted by dinster on 25 February, 2013 - 5:18 pm
How to convert Centum CS3000 *.TRF trending file?
1
reply
High vibration BB11
Posted by MAATALLAH on 24 February, 2013 - 1:22 pm
High vibration BB1 in Mark V HMI turbine
4
replies
servo motor repair
Posted by Roy on 24 February, 2013 - 11:23 am
servomotor repair information
1
reply
day/time setting in HMI
Posted by ESKAY on 24 February, 2013 - 4:49 am
unable to set the date/time in HMI.
Toshiba power transformer cooling system
Posted by Controman on 23 February, 2013 - 6:03 pm
What's the role of the oil flow indicator?
3
replies
GE MS 6001B
Posted by soheil on 23 February, 2013 - 2:46 pm
differences between MS6001B MODEL 6561 & MS6001B MODEL 6581?
Using flow transmitter to measure sulfur
Posted by muntaser on 23 February, 2013 - 12:13 pm
How to connect transmitter when measuring sulfur using flow transmitter?
As CPD increases, exhaust temperature decreases
Posted by kLous on 23 February, 2013 - 11:24 am
Cooling Air flows (which comes directly from CPD), As CPD increases at the same Firing Temp. the Exhaust Temp will become slightly lower due to the increased cooling flow.
1
reply
GTG 1 TRIP ON PROCESSOR _C_FROZEN
Posted by REME on 23 February, 2013 - 10:47 am
Machine in ISOCH mode and communication failed on processor C
2
replies
Mark V can't reset
Posted by Semutsakti on 23 February, 2013 - 10:41 am
Mark V can"t reset
2
replies
Low Cost Low Weight Sensor
Posted by RPS on 23 February, 2013 - 9:26 am
Looking for a low cost low weight sensor (0.05 - 5 Kilograms)
3
replies
High-speed miniature actuators
Posted by James Ingraham on 22 February, 2013 - 9:34 pm
Looking for a low-cost, high speed, high-duty cycle miniature linear actuator.
1
reply
Flow measurement and valve position
Posted by Cris on 22 February, 2013 - 8:58 pm
Where to install the flow measurement device?
8
replies
MK5 Bad EEPROM Checksum
Posted by Charles on 22 February, 2013 - 1:59 pm
Troubleshooting MK5 "bad eeprom checksum" alarms and <T> core A4 status.
3
replies
LS2100 static starter command for 9fa
Posted by koukos on 22 February, 2013 - 4:49 am
Lci startup command through software (UDH) or through hardware?
1
reply
ModbusTCP/IP Communications
Posted by marius on 22 February, 2013 - 4:06 am
Modbus TCP/IP communication between a CJ2M Omron PLC and a F650 Relay from GE
Binary Output Modulating Actuator
Posted by nicer on 21 February, 2013 - 10:38 pm
To control a Process Variable through a Binary Output Modulating Actuator
2
replies
Level-Flow Cascade-Ratio Control
Posted by nicer on 21 February, 2013 - 10:33 pm
To control tank level and the ratio of its two inflow, at the same time
5
replies
Intrinsically safe barrier required?
Posted by Jordan on 21 February, 2013 - 6:22 pm
When are IS barriers required?
JimPinto.com eNews - 22 February 2013
Posted by Jim Pinto on 21 February, 2013 - 6:08 pm
The latest Jim Pinto.com eNews - 22 February 2013 - Connections for Growth & Success
3
replies
Using AutoCalibrate Display to View Parameters
Posted by MAATALLAH on 21 February, 2013 - 1:28 pm
Using AutoCalibrate display to view parameters when the turbine is running
9
replies
DWATT alarm
Posted by sherif elzoghby on 21 February, 2013 - 10:22 am
Alarm: DWATT is too low to support TNR-TNR lower
2
replies
Synchronisation in Power plant
Posted by paein on 20 February, 2013 - 11:36 pm
Synchronisation criterion
4
replies
Help finding rung number in RSlogix 500
Posted by tossone on 20 February, 2013 - 10:57 pm
Looking for information on how to find the rung number where a program stopped
1
reply
Function of Constants
Posted by ltw on 20 February, 2013 - 9:40 pm
Function of constants in MarkV
2
replies
Conformance test Modbus/ASCII
Posted by Gary Lynch on 20 February, 2013 - 3:37 pm
Conformance test Modbus/ASCII
1
reply
Build a Servo Hydraulic Multi-Actuator System
Posted by Bob Vandervart on 20 February, 2013 - 12:16 pm
Two technicians are going to build a Servo-Hydraulic Actuator System (As a hobby, this is not commercial).
4
replies
Difference between Simple cycle and Combined Cycle
Posted by Sadiya on 20 February, 2013 - 10:51 am
What is the difference between Simple cycle gas turbines and combined cycle gas turbines?
3
replies
DP Tx for Interface
Posted by BrettA on 20 February, 2013 - 5:50 am
Convince my employer that its not the right application
1
reply
Cimplicity HMI Viewer Addition
Posted by kwaku on 20 February, 2013 - 12:46 am
Additional Cimplicity HMI viewer configuration
ppro ptur variables
Posted by DigilogJoe on 19 February, 2013 - 5:41 pm
Variable definitions
Cimplicity 8.2 task
Posted by has100 on 19 February, 2013 - 12:44 pm
VB Scripting regarding time capturing.
3
replies
Risk assessment responsibility
Posted by Tom Bullock on 19 February, 2013 - 10:34 am
Who is responsible for risk?
4
replies
Validation of gas turbine performance test measurements
Posted by apollo on 18 February, 2013 - 1:09 pm
How do you validate gas turbine performance measurements?
3
replies
Current loop signal
Posted by Narayanan on 18 February, 2013 - 8:47 am
Currently working on a positioner and have basic knowledge of the functioning; am Looking for clarification on how the power for controller is drawn from the 4-20mA current loop
7
replies
Small scale SCADA system
Posted by Paul on 18 February, 2013 - 6:18 am
Small scale SCADA system
1
reply
Yokogawa CS3000 HIS Download Error
Posted by August Benson on 18 February, 2013 - 1:38 am
HIS download database error