Ingersoll-Rand HP375WIR, Инструкция по установке, эксплуатации и обслуживанию

Страница: 10 / 46

Book: 22600498 (1/05) 10
An AUTO-MANUAL switch, S1, is provided to establish the mode of operation. It is an
input to the controller. When set in the AUTO position, the auto start stop feature will
function as described in this section. When placed in the MANUAL position, auto start
stop is disabled and the machine will function as it would normally.
Outputs
The auto start module provides four 24 VDC outputs for indicators. They are: low fuel,
compressor operating, crank alarm, and auto mode enabled. These outputs provide 24
VDC at 2 amps and can be used to drive indicator lamps or relays. They are typically
used to provide remote indication to a control room of the auto start compressor status.
The output to the alarm horn is provided through the wiring harness and is not brought
out to TB1.
The connections to the outputs are located on the terminal strip, TB1, provided with the
kit. They are as follows:
TB1-1 Auto start active output 24VDC
TB1- 5 Machine running output 24 VDC
TB1- 7 Low fuel indication 24 VDC
SECTION 5 of this manual provides schematic diagrams of the auto start system and
wiring harness connections.
Auto Start Stop Operation
Install the auto start kit as described in the Installation section. Make all electrical
connections before turning the machine power ON at the control panel. Once power is
turned ON, the WEDGE controller will automatically recognize the auto start module
and accept commands from it. To activate the auto start stop, place the AUTO-
MANUAL switch, S1, in the AUTO position. The DS1 lamp should illuminate.
The functional sequence is as follows:
1. When the external start switch (pressure switch) contact closes, the start
sequence begins. The contact closure must be maintained for 10 seconds
for the start sequence to initiate.
2.
The auto start module instructs the machine controller to crank the engine.
The auto start module will sound the alarm horn 10 seconds before the
engine starter is engaged and during the cranking process. The machine
controller (WEDGE) will crank the engine until the engine starts or 20
seconds has elapsed.