Permanent increasing demands on safetymeasures require complex gas detectionsystems and redundant protectivemeasures to protect from gas hazards.Therefore the GMA200-MW4 has sixinternal relays. For the implementationof safety measures and alarm, four relayscan be programmed freely so thatin case of alarm the safety measurescan be triggered automatically. Theprogramming grants wide-ranged andflexible possibilities like allocation of oneor more measurement point s to relay,single alarm per measurement point,configuration of collective alarm andgroup alarm, error report and votingfunction. For each, safety related errorreport and maintenance, one furtherrelay is available.
Thông số kỹ thuật
Power supply: 24V DC ±3% with built in power supplyunit, otherwise 20-30VDC (see above) 4x 150mA respectively Itotal=0,6A atany other subdivision
Analog signals Iin1-4: 4-20mA respectively 0,2-1mA(Burden ca.50..100Ω, Imax=70mApermanent / 500mA momentary) Digital signales TRM-Bus1+2: RS485; Half-Duplex; max. 38400 Baud
RS485 outputs:
TRM-Bus1+2: RS485; Half-Duplex; max. 38400 Baud (only for GMA200-MW4 relay modules)
GMA-Bus: RS485; Half-Duplex; galvanically isolated; max. 230400 Baud (for GMA200-MW4 relays modules, control center, PC, SPS or Gateway)
Transmitter connection:
Connection cable:
Cable entries: max. 9 units M16x1,5 (for cable cross section 4,5-10mm)
Terminal blocks: 0,08..2,5mm2 cross section
cable: 3-4 cored ≥0,75mm2 LiYY, NYM (for GMA200-MW4 power supply) 2-4 cored 0,5-1,5mm2 LiYY, LiYCY (for Transmitter) 2 cored 1x2x0,22mm2 BUS-LD (for GMA-Bus at a length >10m)
Housing:
Protection: IP65
Material: Plastics
Weight: ca. 890g
Dimensions: 209 x 180 x 64mm (W x H x D)
Approvals/Testings:
Electromagnetic compability: DIN EN 50270:2006
emitted interference: Type I
interference immunity: Type II
Electrical Safety: DIN EN 61010:2010
pollution degree 2
Overvoltage category II for power supply
Overvoltage category III for relay contacts
Relay Outputs:
Contactors: Six Relays with one open contact each
Contact current capacity:3A/250V AC or 3A/30V DC
Isolation spacings:Basic isolation between the Relays:1&2, 3&4, 5&6Double isolation between the Relays:2&3, 4&5
Analog outputs: 2 x analog output4-20mA (burden max.560Ω)free allocatable
Alarm acknowledgement inputs: 2 x Reset, free allocatable
Data logger (optional): 2GB microSD memory card with FAT (FAT16) formatting
USB terminal: Mini USB jack for configuration of the device via PC
Measuring gases: combustible and toxic gases and vapours, for all GfG transmitters
Display and control elements: 2,2"-LCD graphic display; 5 button keyboard (left, right, up,down, OK); 13 LEDs for Alarms, operation and Relay status
Environmental conditions: for storage:-25..+60°C | 0..99%r.F. (recommended 0...+30°C)
for operation: -20..+55°C | 0..99%r.F.
Power supply:
Operating voltage: 100-240V AC 50-60Hz or/and 24V DC (20-30V DC valid)
Power consumption: max.7W (without Transmitter) max.25W (with Transmitter)
Fuse: F1=T 500mA (for GMA200-MW4) F2=M 1A (for Transmitter)
Metrological suitability testing:
Requested according to DIN-EN 60079-29-1
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