ASHE STL-94 User manual

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
OPERATION MANUAL
STREAM SELECTOR
FOUR CHANNEL
STL-94
ASHE CONTROLS PRIVATE LIMITED.

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
STREAM SELECTOR
FOUR CHANNEL
STL-94
INTRODUCTION
The ASHE Stream Selector Model STL-94 is a microcontroller based Instrument for the accurate process
control of a multi-stream system in Analytical applications. The STL-94 Stream Selector has a 20
character by 4 line back-lit LCD display which shows the process status and various setting parameters
for application specific timing and control of the four Streams. The STL-94 instrument provides a total
of 12 nos. of potential free relay contacts with LED indications on the front panel.
Besides the above, the instrument provides four nos. of 4 to 20 mA retransmission analog outputs
corresponding to each stream. The instrument provides Sample and Hold feature for these 4 to 20 mA
retransmission outputs.
The STL-94 Stream Selector offers two modes of operation, namely the AUTO and MANUAL modes.
The operational logic is as under :
In the Manual mode, the operator can select a particular Stream number.
In the Auto mode, there are two sub-modes of operation, viz., the Timer mode and Pulse
mode.
In the Timer mode, the selected Stream Number is active for the set time.
In the Pulse mode, the number of Streams selected based on the Pulse input.
DEFINITION OF TERMS
1. RUN MODE
After Power Supply is switched On, in the RUN mode of operation, the Stream Selector will execute the
desired sequence of the Streams. The selected Stream output relay gets energized and the
corresponding Low Alarm, High Alarm & 4 to 20 mA Analog Output gets activated. The RUN LED on the
front panel will light up to indicate the instrument is in RUN mode.
The status of outputs is as follows: -
OUTPUT
STATUS
STREAM OUTPUT
Activated
4-20 mA OUTPUT
Activated
LOW ALARM
Activated
HIGH ALARM
Activated
2. STOP MODE
When the Operator presses the STOP key from the front panel, the microcontroller stops the process
at the current stream and deactivates the selected relay output with latched 4-20 mA Output. The
STOP LED on the front panel will light up to indicate the instrument is in STOP mode.

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
OUTPUT
STATUS
STREAM OUTPUT
Deactivated
4-20 mA OUTPUT
Latched
LOW ALARM
Deactivated
HIGH ALARM
Deactivated
3. PAUSE MODE
When the PAUSE key from the front panel is pressed, the microcontroller holds the process at the
current Stream with all outputs latched on their current status.
The PAUSE LED on the front panel will light up to indicate the instrument is in PAUSE mode.
OUTPUT
STATUS
STREAM OUTPUT
Latched
4-20mA OUTPUT
Latched
LOW ALARM
Latched
HIGH ALARM
Latched
4. MANUAL MODE
The Stream Selector instrument STL-94 can be operated manually by means of the front selection key.
The MANUAL MODE is available in both modes of operation, viz.: Timer and Pulse Modes. When the
instrument is in MANUAL MODE, the Manual LED on the front panel will light up.
The desired stream has to be selected by user.
The LCD display will indicate as follows: -
The first line of the display shows which Stream Number is active and also the process status.
The second line of the display shows the time in seconds for which the selected Stream is active. This is
not active in Manual Mode.
The third line of the display shows input signal to the instrument.
The fourth line of the display shows the mode of operation selected.
The following is the sequence in the MANUAL mode of operation:
1) Press STOP key if the instrument is in RUN mode.
2) Press INC key to select desired Stream number (1 to 4).
3) After selecting the desired Stream, press START key to start the process.
4) The corresponding Relay output will activate with potential free contacts.
The Low alarm and High alarm will function corresponding to the process input.
5) The 4-20 mA DC output of the corresponding Stream will be active on the terminals.
The 4-20 mA DC outputs of the other Streams get latched to their last values.
6) Also, the Low alarm and High alarm of other Streams will get latched to their last status.
7) For next Stream, the same sequence from Point no. 1 will be applicable.
STREAM : 01 RUN
TIME : 0001
INPUT : 0500
MODE : Timer-Manual

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
5. AUTO MODE
The instrument STL-94 can be operated automatically by means of the key on the front keypad. When
the instrument is in AUTO MODE, the AUTO LED on the front panel will glow.
The Stream selection is done by the internal microcontroller as per user settings.
The AUTO MODE is available in both modes of operation, viz: Timer and Pulse Modes.
a. TIMER MODE
The ASHE Stream Selector instrument can be operated in Timer Mode.
In the Setting mode, the operator can select the number of Streams to be run at Power ON.
The particular undesired Stream can be skipped in the Skip menu. For the unskipped Streams,
the timer value can be set in seconds.
The following sequence is to be carried out in the Timer Auto mode: -
1) Press the RUN key to start the process.
2) The process will start from the first unskipped Stream.
3) The relay for the current Stream gets energized.
4) The display shows the remaining time for the current Stream.
5) When the timer value becomes zero, the instrument switches over to the next unskipped
Stream.
6) This cycle goes on until the last unskipped Stream and then goes back to the first stream.
b. PULSE MODE
The ASHE Stream Selector instrument can also be operated in Pulse Mode.
In the Setting mode, the operator can select the number of Streams to be run at Power ON.
The particular undesired Stream can be skipped in the Skip Menu. For the unskipped streams,
the timer value can be set in seconds.
The following sequence is to be carried out in the Timer auto Mode: -
1) Press the RUN key to start the process.
2) The process will start from the first unskipped Stream.
3) The relay for the current Stream gets energized.
4) The display shows the sample time for the current Stream.
5) The instrument waits for a synchronizing pulse from the Analyzer.
6) As soon as the +12V pulse is received, the instrument stops sampling of the current
Stream.
7) The instrument switches over to next Stream at the falling edge of the synchronizing pulse.
8) This cycle goes on until the last unskipped Stream and then goes back to the first stream.

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
6. PAGE MODE
The PAGE MODE provides the operator with the last updated process values for all Streams on one
screen. The process values of all channels can be viewed by pressing the PAGE/INC key on the front
panel.
The LCD display will appear as follows: -
INSTALLATION
The instrument should first be mounted in an appropriate cut-out on the panel [See TECHNICAL
SPECIFICATIONS]. All interconnections to the instrument should be made with strong multi-strand wire of
the order 2.5 sq.mm. The ends of the wires should be properly ferruled and suitable lugs must be used
for effective termination.
The cables carrying the input signal from the Sensor should be routed separately and properly isolated
from the power line cables, to prevent any electromagnetic interference in the input signal readings
from the mains power line. The instrument should be earthed to a proper grounding point before
connecting the Power Supply. The voltage between the Earth and Neutral terminals should be
negligible (Approx. 1 V AC). The Relay contacts are potential free and may be powered as per
customer’s requirements with the desired voltage.
Further, the instrument is manufactured using selected high-grade components which guarantee it’s
functionality and long operational life. The instrument carries the specified performance warranty
against manufacturing defects and workmanship defects.
OPERATION & SETTINGS
The front panel of the Stream Selector is as shown below:
1) 0100 2) 0200
3) 0300 4) 0400

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
The front panel of the Stream Selector includes the following features :-
1) A 20 character x 4-line alphanumeric LCD Display (with backlighting)
2) Six nos. of touch-sensitive “Capsense”keys.
3) Four nos. Red LEDS to indicate status of the Stream Outputs.
4) Four nos. Red LEDS to indicate status of the Low Alarms.
5) Four nos. Red LEDS to indicate status of the High Alarms.
6) Three nos. Red LEDS to show the status of the Auto, Manual & Pause modes
7) One bi-colour Red/Green LED to show status of RUN (Green) and STOP (Red).
CONTROL KEYS
The instrument has six touch-sensitive “Capsense” keys on the front panel, the functions of which are
described below :
This key is used for all instrument settings and calibration, as follows :-
Input Calibration, Input Range, Skipping of Streams, Alarms Settings (Low Alarm & High
Alarm), Retransmission output calibration (4-20 mA DC) and Operation Mode Setting.
In the “running”mode, this key is used to switch over to the next stream,
and
In the “setting”mode, this key is used to shift the cursor.
This key is an alternating key between PAGE / INCREMENT options.
In the “running”mode, this key is used to show the input status of all Streams together.
In the “setting”mode, this key is used to increment the value of the selected digit.
This key is used to select alternatively between AUTO / MANUAL modes of operation.
This key is used to PAUSE the process. The microcontroller will stop the process, while
keeping the relay status unchanged. Also the same key is used to escape from
parameter setting mode.
This key is used to toggle the START and STOP process.
SETTINGS OF PARAMETERS
POWER ON SCREEN
The ASHE STL-94 operates on universal AC power supply of 90 to 270 VAC, 50 Hz.
When the instrument is powered On, the display will go blank with only backlight for a period of 5
seconds.
This time has been provided for power supply stabilization within the instrument.
The Power ON Screen on the LCD Display as indicated for five seconds shall be as follows –
MODE
SHIFT
PAGE
INC
START
STOP
AUTO
MANUAL
PAUSE
ESC
ASHE
STREAM SELECTOR
MODEL NO. STL-94

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
This shows that the microcontroller has initialized properly.
The power ON screen shows the manufacturer’s name, the product name and the model number.
PROCESS SCREEN
After the Power ON screen, the instrument will go to Process Screen as follows :
The first line of the display shows which Stream Number is active and also the process status.
The second line of the display shows the time in seconds for which the selected Stream is active. This is
not active in Manual Mode.
The third line of the display shows input signal to the instrument.
The fourth line of the display shows the mode of operation selected.
PARAMETER SETTING MODE SCREEN
Press MODE key to enter into Parameter Setting mode.
After pressing MODE key the display will show the following screen –
Enter the number for the mode selected (01 to 06) using the INC key and press MODE key again to
confirm the selected parameter setting mode.
If there is no key process for 10 seconds, then the display will time out and return to the process
screen.
INPUT CALIBRATION MODE
The ASHE Stream Selector Model STL-94 is factory calibrated. As such, the instrument does not require
any recalibration at the customer’s side. So do not enter into Input Calibration Mode unless the
instrument requires recalibration.
Before entering into Input Calibration Mode, ensure that an accurate analog signal of 4 to 20 mA DC is
connected to the instrument at the input terminals with correct polarity.
Enter the number 01 into Select Menu by using INC key in the PARAMETER SETTING MODE SCREEN.
Press MODE key to enter into Input Calibration Mode.
The LCD Display indicates as under :
Password
0000
1) I/P CAL 2) I/P RANGE
3) SKIP 4) ALARMS
5) Retrans 6) SETTINGS
Select Menu : 00
STREAM: 01 RUN
TIME : 0001
INPUT : 0500
MODE : Timer-Auto

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
Press the SHIFT key to move the cursor to the last digit.
Enter the Password 0004 by using INC key and then press MODE key. After pressing MODE key the LCD
Display will show as follows :-
Feed 4 mA DC Current from a reliable 4 to 20 mA source to the instrument. The display will show the
corresponding ADC Count corresponding to 4 mA input current.
Press the AUTO/MANUAL key to save the ZERO calibration point of 4-20 mA DC Input.
The LCD Display will show the message DATA SAVED to acknowledge this setting.
Press MODE key to move on to the Span Calibration point. After pressing the MODE key, the LCD
Display will show :
Feed 20 mA DC Current from 4 to 20 mA source to the instrument. The display will show the
corresponding ADC count corresponding to 20 mA DC input current.
Press the AUTO/MANUAL key to save the SPAN calibration point of 4-20 mA DC Input. The LCD Display
will show the message “DATA SAVED”to acknowledge this setting.
This will complete the input signal 4-20 mA DC calibration of the instrument. Press the MODE key to
exit from Input Calibration Mode.
After pressing the MODE key, the LCD Display will return to PROCESS SCREEN.
INPUT RANGE MODE: -
The ASHE Stream Selector Model STL-94 has the facility to change the resolution and range of the
displayed process value.
Enter 4-ma
00123
DATA SAVED
Enter 20-ma
00123
DATA SAVED

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
Enter the number 02 into the Select Menu by using INC key in the PARAMETER SETTING MODE
SCREEN.
Press the MODE key to enter into Input Range Mode. After pressing the MODE key, the LCD Display
shows :
Press the SHIFT key to move the cursor to the last digit. Enter the Password 0004 by using the INC key
and then press MODE key to confirm. After pressing MODE key the LCD Display will show
The customer can set the resolution and display range for each stream individually.
Use the INC key to select the desired decimal point for display process value.
Press the MODE key to proceed further. After pressing the MODE key, the microcontroller will save
the settings. Set the decimal point for stream number 01 and move to the low range setting.
Use the SHIFT key to shift the cursor to desired digit and the INC key to change the desired digit from 0
to 9. Only the first digit can be set from 0 to 9 with –(negative) sign.
Press the MODE key to save the lower range for Stream no. 01 and move to high range setting.
Use the SHIFT key to shift cursor to desired digit and INC key to change the desired digit from 0 to 9.
Only first digit can set from 0 to 9 with –(negative) sign.
Press the MODE key to save higher range for stream no. 01 and move to the next parameter.
After pressing MODE key the LCD Display will show :
Password
0000
Set Resolution 01
1234
Set Low range 01
0000
Set High range 01
1000
Set Resolution 02
1234

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
In the same sequential process, the following parameters for each Stream can be set :
Resolution (Decimal Point) for Streams 2, 3, 4.
Low Range for Streams 2, 3, 4.
High Range for Streams 2, 3, 4.
On completion of the settings for Stream 4, this completes the settings and calibration process for all
the streams.
After pressing the MODE key, the LCD Display will return to the normal PROCESS SCREEN.
STREAM SKIP MODE
The ASHE Stream Selector Model STL-94 offers the facility to SKIP a particular stream from the process.
Also one can set the Sampling Time of a Stream from 0001 to 9999 seconds which is useful during
operation in Timer Mode.
Enter the number 03 into the Select Menu by using the INC key in the PARAMETER SETTING MODE
SCREEN.
Press the MODE key to enter into Stream Skip Mode.
After pressing the MODE key, the LCD Display shows :
Press the SHIFT key to move cursor to the last digit. Enter Password 0004 by using the INC key and
press MODE key to confirm.
After pressing MODE key the LCD Display will show :
The customer can set the resolution and display ranges for each stream individually.
Use INC key to select desired Skip setting by selecting YES/NO for the particular Stream number.
Press the MODE key to proceed further. After pressing MODE key, the microcontroller will save the set
Skip setting for stream no. 01 and move to Sample Time setting.
If the operator selects SKIP for a particular stream Number, then the display will directly move to SKIP
setting of the next Stream number instead of Sample Time setting.
Password
0000
Skip channel 01
No
Set Sample time 01
0005

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
Use the SHIFT key to shift cursor to desired digit and INC key to change the desired digit from 0 to 9.
The sampling time can be set from 0001 to 9999 seconds.
During operation in Timer Mode, the particular Stream will be active for the set Sample Time. Press the
MODE key to save Sampling Time of Stream number 01 and move to next Skip setting.
In the same sequential process, the following parameters for each Stream can be set :
Skip Channel for Streams 2. 3. 4.
Set Sample Time for Streams 2, 3, 4.
Press the MODE key to save Sampling Time of Stream no. 04 and exit from STREAM SKIP MODE.
This completes the Stream Skip and Sampling Time settings.
After pressing the MODE key, the LCD Display will return to the normal PROCESS SCREEN.
STREAM ALARMS MODE
The ASHE Stream Selector Model STL-94 provides individual Low and High Alarm for each stream. The
Low and High Alarms can be set throughout the range.
Select the number 04 in the Select Menu by using INC key in the PARAMETER SETTING MODE SCREEN.
Press MODE key to enter into Stream Alarms Mode. After pressing MODE key, the LCD Display shows :
Press SHIFT key to move cursor on last digit. Enter Password 0004 by using INC key and press MODE
key.
After pressing MODE key the LCD Display will show :
The operator can set the resolution and display range for each stream individually.
Use the SHIFT key to shift cursor to desired digit and INC key to change the desired digit from 0 to 9.
The Low Alarm of Stream can be set throughout the range.
Press MODE key to proceed further. After pressing MODE key, the microcontroller will save the Low
Alarm setting for stream no. 01 and move to next parameter.
Password
0000
Set Low Alarm 01
0400
Set High Alarm 01
0600

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
Use SHIFT key to shift cursor to desire digit and INC key to change the desire digit from 0 to 9. The High
Alarm can be set throughout the range.
Press MODE key to proceed further. After pressing MODE key, the microcontroller will save High Alarm
setting for stream no. 01 and move to next parameter.
In the same sequential process, the following parameters for each Stream can be set :
Low Alarm for Streams 2. 3. 4.
High Alarm for Streams 2, 3, 4.
Press MODE key to proceed further. After pressing MODE key, the microcontroller will save High Alarm
setting for stream no. 04 and exit from STREAM ALARMS MODE.
This completes the Stream Alarm settings.
After pressing MODE key, the LCD Display will return to the normal PROCESS SCREEN.
RETRANSMISSION (4-20 mA DC) OUTPUT CALIBRATION MODE
The ASHE Stream Selector Model STL-94 provides individual 4 to 20 mA retransmission output for each
stream. All retransmission outputs are factory calibrated and do not require recalibration at the
customer’s side. So do not enter into Retransmission Calibration Mode unless the instrument requires
recalibration.
Before entering into Input Calibration Mode, ensure that a reliable 4 to 20 mA source is connected to
the instrument at the Input terminals with correct polarity.
Feed a DC current less than 4 mA the source to the instrument. The process value on the LCD Display
will show “Low”.
Enter the number 05 into Select Menu by using INC key in the PARAMETER SETTING MODE SCREEN.
Press the MODE key to enter into Retransmission Output Calibration Mode.
The LCD Display shows :
Press SHIFT key to move the cursor to the last digit.
Enter the Password 0004 by using INC key and press MODE key.
After pressing MODE key the LCD Display will show :
Password
0000
O/P zero adjust 01
34

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
Connect a milliamp-meter across 4-20 mA OUTPUT1 terminals with the correct polarity.
The display will show the corresponding ADC count corresponding to 4 mA Output current.
Use the SHIFT key to shift the cursor to desired digit and INC key to change the desired digit from 0 to
9 to get 4 mA on the milliamp meter.
Press MODE key to save the ZERO calibration point of 4-20 mA DC for Output 1.
In the same sequential process, the following parameters for each Stream can be set :
Output Zero Adjust for Streams 2, 3, 4..
High Alarm for Streams 2, 3, 4.
This completes the 4-20 mA retransmission analog output calibration of the instrument.
Press MODE key to exit from Retransmission Calibration Mode. After pressing the MODE key, the LCD
Display will return to normal PROCESS SCREEN.
SETTING MODE
The ASHE Stream Selector Model STL-94 provides both, AUTO and MANUAL modes of operation. One
can select AUTO or MANUAL mode directly from the front panel key. There are two sub-mode options
in the AUTO mode of operation, viz. Timer and Pulse modes.
Enter the number 06 into the Select Menu by using INC key in the PARAMETER SETTING MODE
SCREEN.
Press MODE key to enter into the Setting Mode.
The LCD Display shows :
Press the SHIFT key to move the cursor to the last digit. Enter Password 0004 by using INC key and
press MODE key. After pressing the MODE key, the LCD Display shows
Use the INC key to select the desired mode of operation to either Timer or Pulse.
Press the MODE key to proceed further. After pressing MODE key, the microcontroller will save
selected mode of operation and move to Sample Time setting.
Password
0000
Select Mode
Timer

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
After pressing the MODE key, the LCD Display shows :
Use the SHIFT key to shift the cursor to desired digit and INC key to select desired number of stream
(01 to 04). This has to be activated at the time of Power ON.
Press the MODE key to proceed further. After pressing MODE key, the microcontroller will save the set
Number of stream as Start Channel and move to Sample Time setting.
After pressing MODE key, the LCD Display shows
Use the INC key to select the desired setting of Process Status on Power Up. Press MODE key to
proceed further. After pressing MODE key, the microcontroller will save this setting.
This completes the entire setting procedure for the Stream Selector.
Press the MODE key to exit from Setting Mode.
After pressing the MODE key, the LCD Display will return to the normal PROCESS SCREEN.
Start Channel
01
On Power up
Run

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
TERMINAL DIAGRAM
The terminal details of the Stream Selector Model STL-94 are as under :
UPPER ROW
TERMINAL BLOCK
NOTATION
DETAILS
STREAM
OUTPUT
RELAY
C
RELAY -1
NO
C
RELAY 2
NO
C
RELAY 3
NO
C
RELAY 4
NO
NO
CONNECTION
X
NO
CONNECTION
X
X
X
X
X
X
OUTPUT
SIGNALS
+
OUTPUT 1
-
+
OUTPUT 2
-
+
OUTPUT 3
-
+
OUTPUT 4
-
NO
CONNECTION
X
NO
CONNECTION
X
X
X
INPUT SIGNALS
+
4 to 20mA DC
-
X
NO CONNECTION
+
PULSE (12 V DC)
-
RS-485
COMMUNICATION
B
RS-485
MODBUS
A
G

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
LOWER ROW
TERMINAL BLOCK
NOTATION
DETAILS
AC POWER SUPPLY
L
90-270 V AC, 50/60 Hz
N
E
LOW ALARAM
RELAYS
NO
RELAY 7
NC
C
NO
RELAY 8
NC
C
NO
RELAY 9
NC
C
NO
RELAY 10
NC
C
NO CONNECTION
X
NOCONNECTION
X
HIGH ALARM
RELAYS
NO
RELAY 13
NC
C
NO
RELAY 14
NC
C
NO
RELAY 15
NC
C
NO
RELAY 16
NC
C
NO CONNECTION
X
NO CONNECTION
X
X
X
X

ASHE CONTROLS PRIVATE LIMITED.
STREAM SELECTOR STL-94
Operation Manual
TECHNICAL SPECIFICATIONS
Model : STL-94
Type : Micro-controller based Stream Selector.
Input Signal : Analog 4 to 20 mA DC
Digital Pulse Input (For Stream Selection)
Number of Streams : Four nos.
Display : 20 x 4 Alphanumeric LCD Display with white
Backlight and Black Text.
4 nos. LEDS for status of Streams
4 nos. LEDS for indication of Low Alarm
4 nos. LEDS for Indication of High Alarm
3 nos. LEDS for Status Indication (Auto/Manual/Pause)
1 no. Bi-colour LED for Start/Stop status indication
Scale Range : 0000 to 9999 (Selectable)
Response time : Typically 500 mS.
Relay Outputs : For Streams Four Potential Free Relay Contacts
For Low Alarm Four Potential Free Relay Contacts
For High Alarm Four Potential Free Relay Contacts
Contact rating : 10 Ampere @ 230 V AC (Resisitive Loads).
Memory : Non-Volatile (on EEPROM).
Settings : By six nos. of touch sensitive keys on front panel.
Features : Control Logic, Set points, Hysteresis etc.
Accuracy : 1% FSD.
Power Supply : 90 to 270 V AC, 50 Hz, universal AC power.
Enclosure : Panel mounting.
Bezel Dimensions : 160 x 80 mm
Cut-out Dimensions : 151 x 75 mm
Depth : 150 mm
Weight : Approximately 1.0 kgs.
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