GE Industrial Solutions ASTAT XT - Manual (Page 51)

51 • Installation
5.6 Internal Fan Control
An internal jumper connected between the fan and terminal 2, enables three modes of operation. For fan power
consumption, see technical specification section
3 page 11.
Fan control jumper J1. Refer to section 5.4 page 48 for J1 location.
Continuous mode (factory default) – Fan operates as long as the control supply is connected to terminals L-N.
Leave the internal jumper connected to the left terminal of JI (marked A in the drawing).
External control mode – Fan operates when the control supply is connected to terminal 2. Connect the internal
jumper to the centre terminal of JI terminal (marked B in the drawing). For use without bypass, connect the fans
before giving the start command and disconnect at least 5 minutes after giving the stop or soft stop command.
Automatic mode – Whenever the start or stop signals is given the fan operates for approximately 5 minutes.
Connect the internal jumper to the right terminal of JI (marked C in the drawing).
CAUTION Automatic mode may be used only if bypass contactor is directly controlled by the
ASTAT-XT’s EOR (End Of Ramp) relay contact.
5.7
Analog I/O (Terminals T1, T2, Gnd, Out (-), Out (+))
The analog option incorporates two
functions:
Thermistor input
Analog output
Analog PCB layout
Thermistor Input (Terminals T1, T2)
Programmable as PTC or NTC type thermistor. Trip value is adjustable between 1-10K, preset delay of 2 sec.
For thermistor input programming refer to section
4.7.7 on page 38.
Ground Terminal (terminal Gnd)
Connect the thermistor and/or the analog output shield to this ground terminal.
Analog Output (Terminals Out (+), Out (-))
Dip switches allow selection between: 0-10VDC, 0-20mA, 4-20mA
The analog value is related to I, 0….200% of Motor Current (not programmable).