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PERRY ELECTRIC S.r.l.
Via Milanese, 11 - 22070 VENIANO (CO)
ITALY - www.perry.it
Gas Control Unit 1GA300M
IP44 external protection
Zones Max 3
Analog input 4 ÷ 20mA
Detection Explosive and/or toxic gases
The G 300M control unit has been designed and built according to European regulations to flexibly detect the
1 A
toxic and/or explosive gas and OXYGEN, through the connection of 3 remote probes. The presence of this and other
devices makes the control unit suitable for Tertiary and Industrial uses.
1st
LEVEL 1° Pre alarm,
-
2nd LEVEL 2°
-
Pr alarm,
e
3rd LEVEL- Main Alarm,
Through special sensors for oxygen it is possible to detect deficiency or excess of oxygen.
Other technical features make this control unit extremely versatile and reliable; for example, by using a series of
microswitches it is possible to:
Select or disable the probe when not installed or faulty;
Select
the type of gas to be detected (toxic or explosive);
Choose
the relay functioning mode (pulsed or continuous);
Choose
to enable or disable of the
The presence of a TEST button allows to check the correct functioning of the control unit in two ways:
1) System TEST. Pressing the TEST button tests the entire system, including the relays and accessories connected to it.
2) Maintenance TEST. With special arrangements you can enable the function of exclusion of the general alarm relay for a
maximum duration of 60 minutes.
The IP44 external structure was designed for installations on walls, or on electrical panels by means of special brackets.
In addition to the alarm signal light, it is fitted with an internal buzzer for acoustic signals.
1 - TECHNICAL SPECIFICATIONS
Main Power Supply ........................................................................................... 110/230 VAC ± 10% 50/60 Hz
Secondary Power Through Battery Max 2,2 Ah (Optional)..................................................12 V DC
Battery Charger max 2.2 Ah ............................................................................................................... controlled
Power Demand ......................................................................................................................8,3W max @ 230V
Power Demand ...........................................................................................................................4W max @ 12V
Relay Contact Range ..................................................................... 10A 250VAC resistive - 5A 30VDC resistive
1st Pre Alarm ............................................................................................... set to 8% of L.E.L. or 120ppm CO
2nd Pre Alarm ............................................................................................ set to 13% of L.E.L. or 200ppm CO
Final Alarm ................................................................................................. set to 20% of L.E.L. or 300ppm CO
OXYGEN alarm ........................................................................................ Oxygen deficiency, Oxygen Excess
Monitored Gas Indication ..................................................................................... through backlit color display
Number of Conventional Sensors that can be connected ....................................................................... Max 3
Micro-switches to include or exclude the probes ................................................................... 1 per each probe
Microswitch to select OXYGEN detection ..................................................................................... incorporated
Connectable probes ....................... Semi-conductor, Catalytic, Electrochemical cell, Pellistore, Infrared Rays
Type of faults detected by Fault Circuit ......................................................... interruption, short circuit, or wear
Input Signal ................................................................................................................... 4 ÷ 20 mA on 220 Ohm
Device Accuracy ....................................................................................................................................... 1% FS
Response Time ............................................................................................................................................ < 2"
Functioning Temperature ........................................................................................................... -10°C ÷ +60°C
Waiting, blinking period
Manual Test .............................................................................................................................................. built in
Max. distance between probes and unit .................................................................................................. 100 m.
Cable diameter for connecting probes ....................................................................................................... 1mm
Connection: the cable of connection of the probe
Otherwise, make sure to use a shielded cable
Size ................................................................................................................................................. 144x144x108
Degree of Protection .................................................................................................................................... IP44
1st Alarm. This was set to 8 % of L.E.L.
2nd Alarm. This was set at 13% of L.E.L.
This was set at 20 % of L.E.L.
intrinsic safety
(Warm up)
..................................................................................... about 90 seconds
REFERENCE STANDARDS
EN 50194-1 EN 50291-1
EN 60079-29-1
EN 45544-1 EN 45544- 3
The G 300M control unit has three danger levels:
1 A
(EXPLOSIVE GAS) 120 ppm (TOXIC GAS)
(EXPLOSIVE GAS) 200 ppm (TOXIC GAS)
(EXPLOSIVE GAS) 300 ppm (TOXIC GAS)
(positive safety)
.
must not be installed together with the power cables
1
SE NS OR S
1
MAI N
ALA RM
SE NS O RS
O VE RL O
AD
B AT TE R
Y
AD
O VE R LO
Wall mounting
presence of
±10%
.
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Summary of Contents for Perry 1GA300M
- Page 1 ITALY - www.perry.it ALA RM SE NS O RS O VE RL O B AT TE R O VE R LO Gas Control Unit 1GA300M IP44 external protection REFERENCE STANDARDS Zones Max 3 EN 50194-1 EN 50291-1 Analog input 4 ÷ 20mA...
- Page 2 - Any use of the detector for purposes other than the intended one is considered improper, and as a result of which PERRY disclaims any responsibility for possible damages caused to people, animals or objects. - The control unit is not waterproof: if immersed in water or exposed to high humidity, it can be seriously damaged.
- Page 3 2 - GENERAL DESCRIPTION OF THE CENTRAL UNIT 1 2 3 4 Deleting or disabling the probes monitored gas type selection Switch 1 Intrinsic safety selection Switch 2 Main alarm relay functioning mode Switch 3 Maintaining of the memory of alarm, only when you set the CO gas Switch 4 Selecting OXYGEN mode...
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Page 4: Description Of Display
DESCRIPTION OF DISPLAY Identification 1 2 3 of the Sensors (probes) from No. 1 to No. 3 A row of LEDs numbered from 1 to 3 and called PROBES has been fitted on the device. These LEDs are lit with a 4 seconds frequency representing the connected probes, and indicate the probe being read on the display. -
Page 5: Electrical Connections
3 - ELECTRICAL CONNECTIONS WARNING: efore connecting to the mains power, ensure the voltage is correct. Carefully follow the instructions and the connections according to Regulations in force, keeping in mind that the signal cables should be laid separate from the power cables. Otherwise, make sure to use a shielded cable. -
Page 6: Connection Examples
4 - CONNECTION EXAMPLES external push-button Connections of a solenoid valve Normally Closed without intrinsic Safety (N.C.) Manual Alarm PH N 10 11 12 Fault st Threshold nd Threshold Alarm Solenoid valves Power supply 230 V external push-button Connections of a solenoid valve Normally Closed with intrinsic Safety (N.C.) Manual Alarm PH N... -
Page 7: System Maintenance
5 - SYSTEM MAINTENANCE The simultaneous and prolonged pressure for 5 seconds of the " TEST " and " RESET " buttons enables the test-on mode in which the control unit does not switch the general alarm relay for a Maintenance Test period of 15 minutes, not even pressing the external manual button. - Page 8 Micro-switch Intrinsic Safety Micro-switch working mode of the Main Alarm relay Micro-switch Memory maintenance Micro-switch Oxygen mode Inserting Zon 1 Zon 2 Zon 3 Switch 1 – Selection of the intrinsic safety In the position, the intrinsic safety function is enabled. In the position, the intrinsic...
- Page 9 7 - INSTALLATION AND POSITIONING THE 1GA300M CONTROL The 1GA300M control unit belongs to group II and must be installed in a safe area; Outside the ATEX zone, however, not in boiler rooms or engine room. The control unit must be accessible and visible to the user.
- Page 10 9 - TURNING ON 1) Apply power using the proper switch. This switch should be fitted with protection fuses. 2) You will notice that some LED will light up in turn for about 20 seconds, so as to test the LED. 3) The Led ON continues to blink about 1,30 minutes after which remains steady light.
- Page 11 WARNING! Actions to be taken in case of alarm Put out all free flames. Close the main gas tap (CH4) or the LPG cylinder tap. Do not turn any lights on or off; do not turn on any electrical device or appliance. Open windows and doors in order to increase ventilation.