GE IS200IIDAG1ABB DIRECT CURRENT INNOVATION CARD PCB GE BOARD

Description

GE General Electric Technical Specifications: IS200IIDAG1ABB

Once the IS200IIDAG1ABB thermal model is setup, an alarm and/or trip element can be enabled. If the generator has been offline for a long

period of time, it will be at ambient temperature and thermal capacity used should be zero. If the generator is in overload,

once the thermal capacity used reaches 100%, a trip will occur. The IS200IIDAG1ABB thermal model trip will remain active until a lockout time

has expired. The lockout time will be based on the reduction of thermal capacity from 100% used to 15% used. This reduc

tion will occur at a rate defined by the stopped cooling time constant. The thermal capacity used alarm may be used as a

warning indication of an impending overload trip

The IS200IIDAG1ABB has four analog output channels (4 to 20 mA or 0 to 1 mA as ordered). Each channel may be individually config

ured to represent a number of different measured parameters as shown in the table below. The minimum value pro

grammed represents the 4 mA output. The maximum value programmed represents the 20 mA output. All four of the

outputs are updated once every 50 ms. Each parameter may only be used once.

The analog output parameter may be chosen as Real Power (MW) for a 4 to 20 mA output. If rated power is 100 MW, the

minimum is set for 0.00 × Rated, and the maximum is set for 1.00 × Rated, the analog output channel will output 4 mA

when the real power measurement is 0 MW. When the IS200IIDAG1ABB real power measurement is 50 MW, the analog output channel will

output 12 mA. When the real power measurement is 100 MW, the analog output channel will output 20 mA.

There are 4 analog inputs (4 to 20 mA, 0 to 20 mA, or 0 to 1 mA) that may be used to monitor transducers such as vibration

monitors, tachometers, pressure transducers, etc. These inputs may be used for alarm and/or tripping purposes. The

inputs are sampled every 50 ms. The level of the analog input is also available over the communications port. With the

489PC program, the level of the transducer may be trended and graphed.

Before the input may be used, it must be configured. A name may be assigned for the input, units may be assigned, and a

minimum and maxi-mum value must be assigned. Also, the trip and alarm features may be blocked until the generator is

online for a specified time delay. If the block time is 0 seconds, there is no block and the trip and alarm features will be

active when the generator is offline or online. If a time is programmed other than 0 seconds, the feature will be disabled

when the generator is offline and also from the time the machine is placed online until the time entered expires. Once the

input is setup, both the trip and alarm features may be configured. In addition to programming a level and time delay, the

PICKUP setpoint may be used to dictate whether the feature picks up when the measured value is over or under the level.

If a vibration transducer is to be used, program the name as “Vibration Monitor”, the units as “mm/s”, the minimum as “0”,

the maximum as “25”, and the Block From Online as “0 s”. Set the alarm for a reasonable level slightly higher than the nor

mal vibration level. Program a delay of “3 s” and the pickup as “Over”.

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