IS420UCSBH1A REV.H  Mark VIe Controller

The IS420UCSBH1A controller is the first of the UCSB controllers manufactured by General

Electric as part of the Mark VIe Control Safety System Series. This controller is similar to the UCSC controller

and while it does not have the same hardware the software needed to operate this controller is nearly identical.

According to the GEH-6725 Mark VIe and Mark VIeS, Controls Equipment HazLoc Instruction Guide the IS420UCSBH1A controller

is labeled as a Mark VIe, LS2100e, and EX2100e controller. There is also a specific microprocessor used with this controller,

the microprocessor installed in this device is the 600 MHz EP80579 Intel Processor.

On page twenty-two of the GEH-6725 Instruction Guide, there is a small table that labels the electrical/power supply

ratings needed to power the IS420UCSBH1A, the ratings are as follows, a minimum voltage of eighteen direct currents,

with a maximum of thirty volts of direct current, the nominal power rating is twenty-four and twenty-eight volts of direct current. The maximum current rating used with this device is 1.5 ADC.

IS420UCSBH1A

When being mounted there are several certifications that are required to mount the IS420UCSBH1A controller in

hazardous and non-hazardous locations alike. For example, when mounted in ATEX Zone 2, Group IIC, the certification

needed is UL DEMKO 12 ATEX 1114875X. All certifications regarding the controller being mounted in Class I,

Zone 2, Group IIC, non-hazardous, and Class I, Division 2, Groups, A, B, C, and D are the same, the certification requirements for these locations are UL E207685.