Gardner Denver RDS Series, Operation And Maintenance

Page: 14 / 70

- 14 -
The remote option (option C) allows start/stop and
alarm monitoring functions from a remote location.
The option is universal for all RDS dryer products.
There are four terminal on the remote option board.
Terminals 1:5 are active and are used for remote
start/stop functions. Terminals 2:6, 3:7, and 4:8 are dry
and used for remote alarm monitoring functions. Follow
the procedures outlined below to install the remote option.
DEENERGIZE THE AIR DRYER AT THE MAIN SOURCE
OF ELECTRICAL SUPPLY BEFORE BEGINNING
INSTALLATION OF REMOTE OPTION. FAILURE TO DO
SO COULD RESULT IN PERSONAL INJURY AND/OR
EQUIPMENT DAMAGE.
1. Install option board in the rear section of the electrical
compartment of the dryer. There are two predrilled holes
that are designed to accept self tapping or sheet metal
screws. The terminals on the control board should face the
rear of the dryer when properly installed.
2. Remove jumper (JP1) from the rear of the main dryer solid
state control board. JP1 location is detailed in the dryer
Operation and Maintenance manual.
Remote option will
not work unless JP1 is removed.
3. Plug the “pigtail” provided with the remote option into the
blank jack on the back of the main control board. The
switch on the remote board must be in the REMOTE
position for the option to work properly.
4. At this point, the option is installed and ready for customer
supplied connections. Please refer to the diagram of the
option terminal board when making connections.
P
LEASE
N
OTE
: Contact Ratings on
Remote Option Board are 48 VAC/DC.
RDS Series —50-1000 SCFM
Installing the Dryer
Section 4
4.6.1 Installation Instruction for
Remote Option
5. Terminals 1 and 5 are connected. Power is supplied
to one side of the contacts from the solid state control
board and parallels the on off function on the dryer.
When a switch is installed between 1 and 5 the dryer
will turn on when the switch is closed and shut off
when the switch is open.
6. Terminals 2 and 6 are connected to dry contacts on the
control board that close when the dryer is on and can be
used to give a remote RUN indication. Connect customer
supplied power to number 2 side on the terminal. Connect
number 6 side to customer supplied device such as light,
relay coil. etc. that will be used to give remote indication.
7. Terminals 3 and 7 are connected to dry contacts on the
control board that close when a HIGH REFRIGERANT
TEMP OR HIGH TEMP alarm is sensed and can be used
to give a remote high temperature indication. Connect
customer supplied power to number 3 side on the terminal.
Connect number 7 side to customer supplied device
such as light, relay coil. etc. that will be used to give
remote indication.
8. Terminals 4 and 8 are connected to dry contacts on the
control board that close when a HIGH DEWPOINT alarm is
sensed and can be used to give a remote high dewpoint
indication. Dewpoint alarm will not activate until 15 minutes
after the dryer is turned on to allow it to reach operating
conditions. Connect customer supplied power to number
4 side on the terminal. Connect number 8 side to customer
supplied device such as light, relay coil. etc. that will
be used to give remote indication.
Caution