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DIGITAL ANNUNCIATOR
INSTALLATION INSTRUCTIONS
DD-40NTS-O, DD-40NTS-U
DD-NTS II 5-02
WARNING: READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR
OPERATING THE DD ANNUNCIATOR SYSTEM. AN IMPROPERLY INSTALLED OR
OPERATING DEVICE MAY RESULT IN AN UNSAFE OPERATING CONDITION OF THE
MONITORED MACHINE WHICH CONSEQUENTLY COULD POSE THE THREAT OF
PERSONAL INJURY TO OPERATORS OR OTHER NEARBY PERSONNEL.
1.0 DESCRIPTION
1.1 The Altronic DD-40NTS digital annunciator is an electronic, 40-point monitor and shutdown
device. The annunciator has a built-in hourmeter / tachometer with over speed protection.
A front mounted keypad serves as a user interface along with a LCD display.
1.2 The DD-40NTS annunciator system is suitable for use in Class I, Group C or D, Division 2
hazardous locations and consists of the following items:
DD-40NTS-O Annunciator, 40 normally open points
DD-40NTS-U Annunciator, 40 normally closed or open points (can be mixed)
(requires terminal module part no. 672169-1)
691200-1
Power Supply - 10 to 30 Vdc, 50 mA max. or 100 to 400 volt negative ground
CD ignition systems.
693115-1
Cable, DB-25 (2 required for DD-40NTS-U unit only)
693116-1
Cable, DB-9 (for RS-232 serial communications)
1.3 RS-232 / RS-485 serial communications are provided for remote engine monitoring via
modem or satellite. Serial communications require the use of the DC power option.
1.4 For reliable operation, the following instructions must be adhered to strictly.
2.0 MOUNTING
2.1 ANNUNCIATOR UNIT - Using four #10 screws, mount the Annunciator Unit inside a control
panel or to a suitable flat surface so that the display is at a convenient viewing height. A
drilling template is provided. The annunciator unit box must be grounded.
NOTE:
Avoid mounting with the LCD display facing direct sunlight. The display
temperature range is -40°F. to +175°F.
2.2 691200-1 POWER SUPPLY - The Power Supply mounts directly to the back of the
Annunciator Unit using two 8-32 x 5/16" length screws provided.
2.3 The terminal strip board (only applicable on the -U version) can be snapped on 32 or 35 mm
DIN mounting rails.
