Sensaphone SCADA 3000 Users manual - Manual (Page 269)

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Chapter 26: Analog Output Module
Chapter 26: ANALOG OUTPUT mODULe
INTRODUCTION
The SCADA 3000 Analog Output Module is an optional component for use with the SCADA
3000 system. The module features four analog output signals that can be configured as
4–20mA, 0–20mA, or 0–10V. The outputs can be used to control equipment, drive digital dis-
plays, or provide information to other computer devices. The individual outputs are capable
of driving up to 1000 Ohms. They may be controlled automatically via a ladder program or
C-program. The module also features a microprocessor watchdog circuit to maintain system
reliability. LED indicators are provided to show system power and module operation via a
blinking pulse LED.
INSTALLATION
This chapter provides information necessary to install the Analog Output Module. Correctly
installing the unit will ensure proper functioning and maximum service life. Please read the
entire chapter before attempting installation.
OPERATING ENVIRONMENT
The Analog Output Module should be mounted and operated in a clean, dry and safe environ-
ment. Do not mount the unit where it will be subject to shock and vibration. Do not mount
the unit where it will be subject to dirt, dust or moisture. Ideally the unit would be mounted
in a steel or a fiberglass NEMA-4 enclosure. Do not mount the unit or the expansion modules
close to motor starters, contactors or relays that switch inductive loads. These devices generate
large electromagnetic fields that can cause the Analog Output Module to malfunction. Where
this is unavoidable, mount the module(s) and main unit in a separate, grounded, steel enclosure.
This will shield them from harmful electrical interference.
The temperature range the Analog Output Module can operate in is 32°F to 158°F (0°C to
70°C). If you require the Analog Output Module to operate in a below-freezing environment,
you must take safe and practical measures to keep the module’s temperature above 32°F or it
will not operate reliably.
CAUTION: The Analog Output Module is a sensitive electronic device.
Personnel and work area should be grounded before handling this device. Do
not install a SCADA 3000 system near any strong electrostatic, electromagnetic,
magnetic or radioactive fields. Do not expose it to fumes or corrosive vapors.
mOUNTING THe ANALOG OUTPUT mODULe
When you receive the Analog Output Module, carefully remove it from the box. On the top
and bottom of the enclosure are mounting holes to attach the unit to either a panel or wall.
The mounting surface should be sturdy enough to support 2 lbs. The unit should be mounted
using four #10-32 bolts where appropriate, or four #10 tapping screws. (The screw kit for the
Analog Output Module includes 4 #10-32 screws, 4 #10-32 nuts, 4 #10 lockwashers, and 2 #6-
32 screws, 2 #6-32 nuts, and 2 #6 lockwashers. The #6 hardware is for the power supply, if nec-
essary.) When mounting the unit to a wall make sure the mounting screws fully engage a solid
member (for example, a stud) of the support structure. Mount the Analog Output Module in an
upright position so that you can easily connect wires to the terminal strips. The dimensions of
the full enclosure are: 6.3" x 4.2" x 1.2". See Figure 1.