35827_ins_SD2.pdf
SD2 - Status Display, Dual 7-Segment Display
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com
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Specifications subject to change without notice.
Installation and Operation Instructions
rev. 11/18/15
Termination
PROBLEMS
Green Power LED doesn’t light
No display on the digital output
Diagnostics
Fig. 3:
SD2 Module component locator
SOLUTIONS
- Check to see if the SD2 is firmly inserted into the BP – Backplane
- Check the power cable to the BP – Backplane
- Check the power to the PS17 (or other external power supply that is
supplying power to the BP – Backplane) to see that it is supplying power
- Check to see if jumpers are correctly configured
- Check configuration of SW2 and SW3
- Check connections to J1
J2 - Reset Switch Mode Jumper
Denotes whether the switch is Normally
Open (NO) or Normally Closed (NC).
Pins 1-2 = NC
Pins 2-3 = NO (Factory Default)
SW2 - Input Mode Switch
Switches in the correct load to scale
the input for the microprocessor and
denotes to the processor what input
type is selected, mA or Volts. Factory
default is Volts.
SW3 - Span Switch
Denotes whether the span of the input
signal is 4 to 20mA or 0 to 20mA for
current input, or 0 to 10V or 2 to 10V
for voltage input. Factory default is
4 to 20mA/2 to 10V.
J3 - Display Range Selection Jumper
Sets the Display Range for the
7-Segment Display. Factory default is
0 to 10.
Pins 1-2 = 0 to 10 (Factory Default)
Pins 3-4 = 0 to 20
Pins 5-6 = 0 to 30
Pins 7-8 = 0 to 40
Pins 9-10 = 0 to 50
The SD2 is an ETA module that is used to indicate a program error code which requires a manual reset. The module
includes a manual reset switch that can be pressed to route a reset signal to a controller.
The SD module receives an input signal from a controller on Terminal 2 of J1, and then displays a number from 0
to 10 up to 0 to 50, depending on the jumper position of J3. It can accept a current input of either 0 to 20mA or 4
to 20mA or a voltage input of 0 to 10V or 2 to 10V. The type of input signal, current or volts, must be selected via
switch SW2, and the span of that input
signal must be selected via switch SW3.
The green LED indicates that power is
available to the module.
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