Vighnaharta TrueSafe TS 21 I-HC User manual

Vighnaharta Technologies Pvt. Ltd.
2
nd
Floor , Karanjakar Industrial Estate, Sr.No 11/11,
Nanded Gaon, Pune
Phone no.: [phone]
Website: http://www.vighnaharta.in
Prepared By: LAG
Approved By: CPV/GRM
Doc No.: TS 21 I-HC_UM_1_5
Rev.No.: 1_5
Eff.Date.: 21-11-2 15
T S 21 I - C A T - HC
US E R M AN U A L
Vighnaharta Technologies Pvt. Ltd.
ISO 9001:2015 Certified
2
nd
loor , Karanjakar Industrial Estate, Sr.No 11/11, Nanded Gaon, Pune
Phone no.: 91 2 3292263 / 329213 6 Fax: [phone].
Website: http://www.vighnaharta.in

TS 21 I-HC User Manual
Vighnaharta Technologies Pvt. Ltd Page 2 of 19
Table of Contents
Overview .................................................................................... III
Technical Specifications .............................................................. IV
Installation Procedure ................................................................. IV
Opertion ...................................................................................... VI
Menus available in TS 21 I-HC .................................................... XI
Calibration process for TS 21 I-HC ............................................ XII
Appendix A ................................................................................ XIV

TS 21 I-HC User Manual
Vighnaharta Technologies Pvt. Ltd Page 3 of 19
Overview
TS 21 I-HC is LPG gas detector system for protection against gas leakage. The system is designed
to detect gas leakage in the industrial premises with the help of gas sensor. The system is kept at
the user premises. It also detects presence of combustible gases like CNG, LNG. The gas detecting
sensor is kept inside Central Mining Research Institute (CMRI) certified flameproof enclosure. It is
a solid state semiconductor device that reacts to the presence of flammable gas. Microprocessor
based system reads sensor output and indicates the concentration of gas in atmosphere. It is
measured in % LEL (Lower Explosive Limit).
It is useful in variety of locations like LPG / CNG/ LNG gas storage areas, LPG bullets and banks,
plant locations, hotel kitchens, industrial canteens, gas filling stations and so on.
Salient Features
•Detects gases - LPG, CNG, LNG gas.
•Detects gases with concentration between to 1 % LEL with user defined high and low
alarm level.
•Four digit seven segment LED display for % LEL indication.
•Two potential free relay output with user selectable NO / NC.
•Digital input for gas valve status feedback only for Modbus monitoring.
•Selectable -5v or -1 v analog output.
•4-2 mA current output.
•Four magnetic keys which can be operated using magnetic stylus.
•RS485 port for networking multiple gas detectors to building management system.
•Supports MODBUS RTU protocol.

TS 21 I-HC User Manual
Vighnaharta Technologies Pvt. Ltd Page 4 of 19
Technical Specifications
Power
Supply
Input- 24 VDC, 2 mA
Input
4 Magnetic
keys
Indication
LED indication for
following
status
:
1. Power ON: green LED
2. Low Alarm: orange LED
3. High Alarm: red LED
Output Two potential free relay output with NO / NC
Selectable -5V OR -1 V analog output
4 -2 mA current output
Dimensions
(12
x1
2
x
1
)
mm
(L x
W
x
H
)
Operating Temperature
-
1
C
°
to 55C
°
Humidity
to 95 % Rh.
RS485 Interface
Modbus RTU Protocol
Enclosure Aluminium casting
Installation Procedure
Prerequisites:
The convenient location for mounting the system must be finalized.
•TS 21 I-HC unit
•Power supply adapter ( Optional)
•mounting screws
•User manual
•Magnetic stylus
•Align Key
•Screw Driver
To install the unit at the user premises
1. Run all desired power, siren and hardware contact wires to the panel location.
2. Remove metal cabinet knockouts required for wiring entry.
3. Level the cabinet on sturdy wall and mark the mounting holes with a pencil.
4. Tight all the 4 screws of the cabinet.
Backside of TS21I-HC

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Vighnaharta Technologies Pvt. Ltd Page 5 of 19
Installation precautions
•This detector head in the flame proof enclosure must be installed near the gas cylinders or at
the joints of gas carrying pipes.
•The detector must face down to cater for heavier than air gases.
•LPG is heavier than air, it has tendancy to settle down. Hence, if you are using LPG cylinder,
install the unit 3 cm above floor.
•Natural gas (LNG/CNG/PNG) is lighter than air. Hence, install the unit 3 cm below the ceiling
level.
Don’ts
•Don’t use the unit in direct sunlight.
•Don’t expose the sensor to gas concentration higher than its prescribed range.
•Don’t immerse the unit in any liquid.
•Don’t attempt to clean the detector from inside.
•Don’t open the flame proof enclosure when gas is present.
•Don’t switch high voltage or power loads through the relay.
Connector Details of the unit
Connector CON1:
Pin No. Description
1.
VCC
(DC Suppy +)
2. GROUND (Ground -)
3. R1COM (Relay 1 common)
4. R1NO (Relay 1 NO)
5.
R2COM (Relay 2 common)
6.
R2NO (Relay
2 NO)
7. D/I INPUT (Value Status)
8. GROUND

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Vighnaharta Technologies Pvt. Ltd Page 6 of 19
Connector CON2:
Pin No. Description
9. D+ (RS 485 data +)
1 . D- (RS485 data -)
11. C+ (Current O/P +)
12
.
C
-
(Current O/P
-
)
13. A-o/p (Voltage O/P)
14
.
GROUND
Modbus Communication:-
S.NO function code address function
1 1 101 Read DO2 status High Alarm
1 102 Read DO1 status Low Alarm
*2 2 1 Read DI
3 3 1001/1 Read LEL %
4 1001/1 Read LEL %
4 3 1002/2 Read Threshold Low
3 1003/3 Read Threshold High
5 4 1002/2 Read Threshold Low %
4 1003/3 Read Threshold High %
6 5 101 Write D02 High Alarm
5 102 write D01 Low Alarm
7 6 1002 Write Threshold Low %
6 1003 Write Threshold High %
Connecting wires
•Take out the wires from supply, relay output and RS 485 port.
•Make the connections for relay and RS 485 as mentioned in above table.
•Take out wires from output and connect it to desired instrument.
•Insert power adapter to the mains socket.
Operation
When unit is power ON, it goes in to an initial warm up period of 2 seconds. After this period is
over, unit enters into scan mode when it continuously monitors gas concentration level in the
atmosphere. When gas concentration exceeds low or high alarm threshold levels, relay output
changes accordingly. It shows gas concentration level between and 1 % LEL with LED
indication on front panel. TS21I PPM has two settable alarm levels. Low alarm level and High alarm
level.
It uses four magnetic keys which operate using single magnetic stylus to do settings like low / high
alalrm levels, relay out put type and so on.

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Vighnaharta Technologies Pvt. Ltd Page 7 of 19
Front panel of typical TS21I HC is shown as below.
Users may connect interfacing devices at current or voltage output. Unit provides current output
from 4mA to 2 mA and voltage between to 5 or 1 volts.
Relay Settings:
TS 21 I-HC has two relay outputs.
Relay1 for low alarm condition and Relay2 for high alarm condition.
User can use it as a NO or NC type output using the respective jumper adjustments. User can set
relay output type for both relays as PULSE type or LATCH type.
Pulse type output: Relay trips for 5 sec and comes back to its previous state.
Latch type output: Relay remains latched till the unit is reset.
If unit is connected to a Gas Detection Panel, using MODBUS communication, the Gas Detection
Panel gives an alert depending on the status of TS 21 I-HC.

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ghnaharta Technologies Pvt. Ltd
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8
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Jumpers to set NO/NC contacts for relays
In above picture, there are two jumpers shown JP1 used to set Relay1 and JP2 used to set
Relay2. Using these jumpers, user can set NO type contact or NC type of contact.
For Relay1  JP1,
Jumper between pin 1 and 2, Relay1 will be NC type
Jumper between pin 2 and 3, Relay1 will be NO type
JP1
For Relay2  JP2,
Jumper between pin 1 and 2, Relay2 output will be NC type
Jumper between pin 2 and 3, Relay2 output will be NO type
JP2
Modbus Settings:
The following connection diagram shows TS 21 I-HC units connected with Gas Detection Panel.
Siren and power connector locations are shown as below.
Gas Detection Panel (GDP-32) Connection Diagram with TS 21 I-HC PPM
units
To communicate TS 21 I-HC unit with gas detection panel, user must set proper slave address
using DIP switches. Maximum of 255 different combinations of slave IDs can be set using DIP
switches. Refer Appendix to view slave addresses using DIP switches.
Note: If user set wrong slave address, then unit may not be able to communicate with gas
detection panel.
1
2
3
1
2
3

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Vighnaharta Technologies Pvt. Ltd Page 9 of 19
In above picture, we can see DIP switch. It has 12 switches which are used to set slave address.
ON and OFF positions are shown as above. Default position of switches is OFF like in above picture.
When you push switch towards up side then it goes in ON state. Different combinations are used to
set Slave ID, Baud Rate and Parity Settings for communication with Gas Detector Panel.
Slave Address Setting:
The switches 1-8 of SW2 are used to set slave adress of TS 21 I-HC PPM.
For example, To set slave address as 1, keep switch 1 ON and switches 2-8 OFF.
To set slave address as 8, keep switch 4 ON and switches 1-3 & 5-8 OFF.
Refer Appendix A for complete table for slave address setting.
Baud Rate Setting:
To set baud rate, refer the following settings.
Baud Rate
Switch positions
SW9 SW10
2400 ON OFF
9600 OFF OFF
19200
OFF
ON
Parity Setting:
To set parity, refer following settings.
Parity Switch positions
SW
11
SW1
2
No parity
OFF
OFF
Even parity ON OFF
Odd parity OFF ON
Default Settings for TS 21 I-HC
Baud Rate 96 bps
Parity No Parity
Relay 1 NO, O/P: PULSE type
Relay 2
NO, O/P: PULSE type
Output Voltage -1 Volts

TS 21 I-HC User Manual
Vighnaharta Technologies Pvt. Ltd Page 10 of 19
Understanding controls on front panel
LED Indicators
1. ON Power ON LED. Green LED turns on when power is ON. It
indicates Power On status of the unit.
2.
L
–
Alarm
When gas concentration exceeds low threshold level,
TS 21 I
-
HC PPM generates low alarm condition. For low alarm
condition, orange LED turns ON. If relay1 output is pulse type,
LED remains on for 5sec. If relay1 output is latch type, LED
remains on till the unit is reset.
3. H- Alarm When gas concentration exceeds high threshold level, TS 21 I-
HC PPM generates high alalrm condition. For high alarm
condition, red LED turns ON. If relay2 output is pulse type,
LED remains on for 5sec. If relay2 output is latch type, LED
remains on till the unit is reset.
4. LED Display Four digit - Seven Segment LED display shows the current gas
concentration in % LEL. Also it shows cconfiguration settings
like current / voltage range.
Example, the seven segment LED display shows the 56% LEL
of gas concentration.
Magnetic Keypad
-
Four magnetic keys operate using magnetic
stylus
.
1. ENTER Move stylus to ENTER key to enter into system to access
menus. This key has dual function. It is usd to Enter or Save
the data. User can select some menu or can savesetings made
by the user. If user presses the key during Idle mode, it
displays the menu.
2
.
E
SCAPE
Move stylus to
ESCAPE
key to e
xit
from the current
menu
.
If
user exits without saving, ccurrent settings will not be saved.
3. UP Move stylus to UP key to move menu up side or increment the
menu.
4
.
DOWN
Move stylus to
DOWN
key to
move menu
down
side
or
decrement the menu.
0 5 6. 0