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We hold expertise in designing and developing Auto Manual Station (Model A881). These microprocessor based auto manual station are designed to control and display control parameters. The instrument work as an A/M Controller along with an indicator with retransmission output. Being an A/M controller, these instrument accept 4-20 mA input from sources like DCS and give output in normal auto mode. The control shifts from the AUTO mode to the MANUAL mode, during breakdown. User can now control the output 4-20 mA from the control keys provided on the front panel. This transfer is bump-less.Push Buttons Up, Down, F A M I/O | 5 (Up, Down, A, M, I/O, F) Up and Down keys used to vary the output in the Manual Mode. When these keys are Used along with F ( Fast ) key the output can be varied very Fast Used to get back the instrument in Auto mode Used to get back the instrument in Manual mode Used to sense the Input condition : healthy or erroneous |
Indications | 4 digit green/red LED for Controller O/P (channel – 1 o/p for DCS) 4 digit green/red LED for Position feedback - optional 2 LEDs indication on the front fascia for : AUTO or MANUAL Indication 1 LED indication on the front fascia for Input = Output (on channel – 1) |
Outputs O/P Load | 2 nos of 4-20 mA (Analog outputs) Output 1 on channel 1 (Based on Auto/Manual state, Controller O/P) [Reverse mode also possible] Output 2 on channel 2 (Based on the Process Value display) - optional Upto 800 ohms **additional / special o/p possible on confirmations |
Relay O/P | 2 Relay outputs (Digital outputs) provided First relay output on Instrument Fail Second relay output on Auto/Manual selection ** special relay outputs on confirmations |
Tracking | Tracking time field adjustable from the front fascia only Controller O/P can be varied from this |
Accuracy | Display accuracy of 0.15% of full span Output accuracy of 0.15% of full span |
Power | 230 V AC +/- 10% @ 50 Hz. OR 110 V AC +/- 10% @ 50 Hz OR 24 V DC // or SPECIALS |
Enclosure Dimensions Mounting Terminals | Metal sheet powder coated / ABS Plastic 96*96 / 72*144 / 48*96 / specials (w*h) mm Panel / Wall / Field / specialsScrew type on the back side of the instrument |
Amb. Temp | 0-50 deg. C |
Humidity Password | 90% RH single level password protected |
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Our esteemed clients can avail from us Valve Positioner (Series 883). These micro-controller based products are designed to control output going to servo valve, with or without the process controller.Input | 4 – 20 mA DC Feedback resistance from control valve. |
Feedback | 100 Ω (minimum) to 5K Ω (maximum). |
Output | UP and DOWN contacts. 4-20 mA DC isolated, if required. |
Display Range | Configurable. Factory set : 0-100% |
Display Resolution | 4-digit LED |
Deadband Satiability | 0.5% to 5% Maximum |
Front Controls | A/M switch, Up, Down. |
LED Indications | Auto, Manual, UP, DOWN |
Display Accuracy | +/- 0.15% of span°C. |
Power Supply | 230 V AC 110 V AC 24 V DC (22.5 to 28.0 V DC) |
Power Consumption | 6 VA max. |
Ambient Temperature | 0 – 50 °C. |
Storage Temperature | 0 – 70 °C. |
Humidity | 90% RH (non-condensing) |
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We put forward a significant Alarm Annunciator (Series 885) for our valued clients. These products products suitable of indicating field fault conditions in the control room. The offered products sense NO/NC potential free contacts for all the channels in a simultaneous mode. Response time in microseconds while sensing all the channels in round robin fashion is assured by high end microprocessor chips. These products are provided with audio and visual output for alerting plant personnel when fault condition occurs. Front of the instrument controlling keys are provided with acknowledge, reset and test. Same keys can be provided on the back plate. Pattern of rows and columns change with change in total channels, for remote controlling of the unit.Input | NO/NC potential free contacts. |
Output | 1)Audio output (Buzzer, Hooter etc.) 2)Visual output (Front windows) |
Output Alarm | 1no potential free contact (For Buzzer) |
Contact Ratings | 5 Amp, 230 V AC |
Display Window Size | Standard 70*45/30*30/others on front fascia. |
Display | LED display |
Front Controls | Acknowledge, Reset and Test switches. |
Input Type Selection | Internal through jumper selection. |
Power Supply | 230 V AC 110 V AC 24 V DC (22.5 to 28.0 V DC) Specials |
Power Consumption | Depends on no. of windows 6 VA max. for 4 nos. of windows |
Ambient Temperature | 0 – 50 °C. |
Storage Temperature | 0 – 70 °C. |
Humidity | 90% RH (non-condensing) |
Enclosures | Weatherproof, Flameproof and all other standard types |
Mounting | Panel / Wall / Field / Specials |
Dimensions | Depends on User requirements *Special features on factory confirmations only. |
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