Bacharach MGS 400 User Manual

Also see for MGS-400: User manual

Contents

Bacharach MGS 400 User Manual Manual pdf 18 page image

1100-2294 Rev 1 173.2 RestrictionsThe installation location must have appropriate supply power available for the instrument(i.e., 19.5 to 28.5 VDC or 24 VAC). This ultimately determines the distance the instrument canbe mounted from the controller or power supply.3.3 Mechanical InstallationWARNING: DO NOT allow the lid / sensor to hang from the ribbon cable. Failureto comply may result in damage to the product.1. Using the provided hardware, securely mount the MGS-400 gas detector according tothe product dimensions, maximum wiring lengths and following considerations:a. Environment: the full range of environmental conditions when selecting alocation.b. Application: the specifics of the application (possible leaks, air movement / draft,etc.) when selecting a location.c. Accessibility: the degree of accessibility required for maintenance purposes whenselecting a location.d. Target Gas: the specific gravity of the target gas when selecting the height of theinstrument.2. Using a 5/32″ (4 mm) hex key / allen wrench (not included) remove the lid anddisconnect the ribbon cable from the base.3. Set the lid and rubber gasket (IP66-rated enclosures only) aside to be reinstalled later.3.4 Electrical Installation3.4.1 PreparationsIMPORTANT: If analog output is configured for 4 to 20 mA output, ensure thatthe current loop is connected to a sinking current loop monitor before poweringon the instrument. Otherwise, a fault may be displayed indicating an open loopcondition. If analog output is unused, ensure it is configured as a voltage output(default: 1-5V) to prevent an open loop fault condition. The analog output isdesigned as sourcing.CAUTION: Ensure wiring for relays and connections for sensor(s) are madebefore applying power.CAUTION: This product uses semiconductors which can be damaged byelectrostatic discharge (ESD). When handling the printed circuit boards (PCBs),observe proper ESD precautions so that the electronics are not damaged.