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Optional add-on boards
EPCT FirE sEriEs FirE PumP ConTrollEr
MN124016EN August 2019 www.eaton.com
7.0 Optional add-on boards
The EPCT controller is available with four (4) additional
option cards: Relay Board, Secondary 4-20mA Device,
MODBUS, and an Alarm Option board. The EPCT will have
the capability to have future option boards installed with the
use of a firmware update. The maximum allowable current
through the relays is 8A 250VAC / 30VDC.
When a card is installed, the programming tab for the board
will become visible. Programming values will be retained on
option card.
7.1 Relay output board
It includes four (4) relays with (1) one set of form C contacts
per relay wired to terminal blocks. The relays shall be rated
at 8A, 250VAC and 30VDC. It includes two (2) pull-apart six
(6) pin terminal blocks.
7.1.1 Programming
i. Refer to Appendixdd K.
7.2 Secondary 4-20 mA device
It includes a two (2) pole 4-20 mA input screw type, pull-
apart terminal block. It also contains four (4) relays with (1)
set of form-C contacts per relay wired to terminal blocks.
The relays shall be rated at 8A, 250VAC and 30 VDC and it
includes two (2) pull-apart six (6) pin terminal blocks.
7.2.1 Programming:
i. Refer to Appendix L.
7.3 MODBUS Board
It includes an eight (8) pole dip switch bank designed
to switch between RS422 and RS485 with or without
terminating resistors. Includes one (1) pull-apart six (6) pin
terminal block for TXD0, TXD1, RXD0, RXD1, Common, and
a blank terminal. Includes two (2) surface mount LED’s, one
(1) for transmitting and one (1) for receiving.
7.3.1 Programming:
i. Refer to Appendix M.
7.3.2 MODBUS dip switch settings
sW1
sW2
sW3
sW4
sW5
sW6
sW7
sW8
RS422 Unterminated
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
RS422 Terminated RX
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
RS422 Terminated TX
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
RS422 Terminated RX/TX
ON
OFF
ON
OFF
ON
ON
OFF
OFF
RS485 Unterminated
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
RS485 Terminated
ON
ON
ON
ON
OFF
OFF
OFF
OFF
7.4 Supervisory alarm option board
It includes a piezoelectric buzzer with a minimum of
an 90dB rating. Includes one (1) pull-apart six (6) pin
terminal block; two terminals are used for a 120VAC input
(non-polarity specific), two terminals are used for an external
120VAC, minimum 50mA light connection, two terminal
blocks are used for an external and silence push button.
7.4.1 Programming:
i. Refer to Appendix N.
