-2-
2.4 The keypad, along with the LCD display, are used to navigate through channel status and
descriptions, view process screens, and to view or edit the system’s configuration. The
8
UNITS or
9
UNITS or the
6
TENS or
7
TENS keys are used to access channels by increasing
or decreasing the channel numbers by one or by ten with each key press. Pressing the NEXT
key advances the display to the next screen or item. All menu adjustments are saved in non-
volatile EEPROM memory by pressing the ENTER key. The EEPROM memory retains the
current configuration during normal operation, after compressor shutdown and a system
power-down.
2.5 Three pairs of LED’s are provided on the back of the Display Module for troubleshooting
purposes, one Receive (RX) and one Transmit (TX) LED for each port. The TX LED will flash
when the Display Module is transmitting serial communications on the labeled port. The RX
LED will flash when the Display Module is receiving serial communications on the labeled port.
3.0 POWER SUPPLY MODULE
3.1 The Power Supply Module is made to be rail mounted and is the interface between the
Terminal and Display Modules and to other systems. It typically plugs directly into the
Terminal Module using the DB-25 connectors and is held together with screws and screw
locks.
3.2 The Power Supply Module is made to accept up to four industry standard commercially
available 0.6 inch plug-in Output Modules. The Output Modules provide a means of using the
DE-2200 monitor safety shutdown system status to interface with other systems on the
engine/motor and compressor. A typical application would be as a relay or solenoid coil
driver. The Output Modules are optically isolated solid-state switches which are isolated from
power supply minus and engine ground. The Output Modules will be in the open (de-
energized) condition when the unit is unpowered. The output modules can be software
configured for either normally open (N/O) or normally closed (N/C) operation and have an LED
indicator associated with them. Outputs 3 and 4 are for use with the optional speed switch
and pre/post-lube features respectively. If an Output Module is programmed for normally
closed (energized for run), the LED will be ON in the normal run condition and OFF for a fault
condition. For Normally open configured modules the LED will be OFF for normal run
condition and turn ON for a fault condition.
The standard Output Modules’ outputs use the top row of the dual 16-position terminal strip
which is marked OUT 1 through OUT 4. Each of these outputs are fused with a replaceable
6.3 amp slow-blow fuse, Altronic P/N 601653. In addition to accepting industry standard
Output Modules, a custom Altronic Output Module P/N 691124 is available for tripping ignition
powered CD fuel valves and shorting CD ignition shutdown leads upon a fault. When both
functions are required, two of these modules are used as follows: OUT 1 slot must be used
to trip the fuel valve, and OUT 2 slot must be used to short the ignition. If 12-24 Vdc is lost
to the DE-2200 annunciator system, the custom Output Modules will trip the fuel valve and
short the ignition shutdown lead. This mimics the “fail-safe” operation of a normally closed
Output Module and therefore the LED will be ON in the normal run condition and OFF for a
fault condition. In programming the system, these modules are identified by using the
IGN/FUEL selection. Terminals IGN+ and IGN
!
are used to connect the shutdown lead, and
FV1 and FV2 are used for the CD fuel valve. A capacitor is included in the Power Supply
Module to supply the energy to trip the fuel valve.
3.3 The 12-24 Vdc power for the DE-2200 system is applied to the power supply terminals marked
(+) and (
!
) 12 - 24 VDC INPUT POWER. A 6.3 amp replaceable slow-blow fuse protects the
system from over currents, and a power LED lights when power is applied to the system.
