IS220UCSAH1A | GE | Mark VIe Controller

　　General Conditions of Safe Use

　　• Provision shall be made to limit power supply transient voltages to less than 140% of the peak rated power supply voltage.

　　• This equipment shall be used in an environment of not more than Pollution Degree 2 (as defined in EN 60664-1).

　　• For installation in North America, this equipment is suitable for use in Class I, Division 2, Groups A, B, C, and D, or Class I, Zone 2, Group IIC, or non-hazardous locations only.

　　• For Class I Division 2, A, B, C, and D classified locations, this open-type equipment shall be installed within an enclosure that is suitable for the environment, requires a tool or key to open, and meets the requirements of the applicable codes.

　　• For US/Canada Zone 2 classified locations, this equipment shall be installed within an enclosure UL/cUL certified for Zone 2, and for European Union Zone 2 classified locations, this equipment shall be installed within an ATEX Zone 2 certified enclosure. The enclosure should have a minimum ingress protection rating of at least IP54 (as defined in IEC 60529), only be accessible by use of a tool, and meet the requirements of applicable codes.

　　• All wiring shall be installed using suitable Class I Division 2 or Zone 2 wiring methods in accordance with the National Electrical Code (ANSI/NFPA 70), the Canadian Electrical Code, or other local codes as applicable, in accordance with the authority having jurisdiction. Refer to IEC 60079-25 Intrinsically safe electrical systems for guidance.

　　Power Distribution

　　• Power distribution boards shall be powered using the wire harnesses specified in Mark VIe and Mark VIeS Control Systems Equipment in Hazardous Locations (HazLoc) Instruction Guide (GEH-6725) and by a switched-mode power supply (SMPS) that is certified for the applicable location, has its output current limited to 20 A maximum for JPDS, JPDE, and 40 A for JPDG, and meets the specifications for Vendor Manufactured Control Power Supplies in the document Mark VIe and Mark VIeS Control Systems, Volume II (GEH-6721_Vol_II). When two UL listed power supplies are used for redundancy, the same make and model shall be used. A listed diode block accessory shall be used for reverse protection between power supplies where not provided by the source.

　　• For a customer-supplied contact wetting power source to an accessory terminal board through connector JF or JG, use an appropriate GE cable harness listed in Mark VIe and Mark VIeS Control Systems Equipment in Hazardous Locations (HazLoc) Instruction Guide (GEH-6725), the chapter Power Distribution Instructions, and provide separate listed over-current protection based on the ampacity of the individual conductors, but not more than 15 A per conductor.

　　• For North American locations, if contact wetting power is customer-supplied to the accessory terminal board through connector JE1 or JE2, the wire harness specified on drawing 336A4937FJ or in GEH-6725, the chapter Power Distribution Instructions, shall be used, and the wetting power source shall be current-limited by either a UL-recognized fuse rated at not more than 3 A, or one of the following power supplies:

　　− UL R/C, Phoenix Contact© GmbH & Co Kg, model QUINT-PS-100-240AC/24DC/5GE, or QUINT-PS/1AC/24DC/5GE

　　− UL R/C, Convertec Ltd.©, model TIS 150-124

　　• Power for Ethernet switches, controllers, and I/O modules shall be supplied through a power distribution board that limits the available current to 3.5 A maximum and is certified for the applicable classified location. Refer to GEH-6725, the chapter Power Distribution Instructions, for detailed information on power distribution boards.

　　• The Analog Processor, IS410BAPBH1A (comprised of IS400BAPBH1A and IS400BBAAH2A), and the IS210SAMBH1A terminal board should only be powered by the ISxxxJPDHG1A distribution board, which is a limited voltage limited current (LVLC) circuit, or similar.

　　Intrinsic Safety

　　• Selected intrinsically safe apparatus must be third-party listed as intrinsically safe for the application, and hav intrinsically safe entity parameters conforming to the entity parameters specified for the associated apparatus.

　　• Capacitance and inductance of the field wiring from intrinsically safe apparatus to the associated apparatus shall be calculated and must be included in the system calculations. Cable capacitance, Ccable, plus intrinsically safe equipment capacitance, Ci, must not exceed the capacitance, Ca or Co, specified for the associated apparatus. The same applies for inductance (Lcable, Li, and La or Lo, respectively). Where the cable capacitance and inductance per foot are not known,the following values shall be used: Ccable =60 pF/ft, Lcable = 0.2 μH/ft.

　　• Field wiring terminals are intended for the connection of copper conductors with the insulation locally removed and without the addition of intermediate parts other than those replicating the form of a bare conductor, such as a ferrule.

　　• For thermocouple and RTD field wiring terminals:

　　− Only resistive simple apparatus shall be connected.

　　− Each cable used to connect the simple apparatus must have suitable insulation as required by the applicable local electrical codes.

　　− The maximum cable length connecting each thermocouple to the device shall not exceed 304.8 m (1,000 ft).

　　• Adhere to the following warning for hazardous locations:

IS220UCSAH1A.pdf

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