Setting The Fail-Safe Dip Switch; Relay Output Test Mode - Emerson E2 Installation And Operation Manual

(all other output boards).
Table 9-3 shows how the fail-safe switch, jumpers,
and/or Form C contacts should be configured based on
how you want the output to perform during both normal
operation and during network/power loss.
Controller
Fail
Command vs.
State
Contact State
ON=CLOSED ON
OFF=OPEN
ON=CLOSED OFF
OFF=OPEN
ON=OPEN ON
OFF=CLOSED
ON=OPEN OFF
OFF=CLOSED
Table 9-3 - Output Board Fail-Safe and Switch Settings
9.2.3 Setting the Fail-Safe Dip
Switch
The fail-safe dip switch determines the sate of the relay
when communication is lost between the board and E2.
The fail-safe dip switches are labeled S2 on the 8RO, and
switch S3 on the 8IO. Each of the eight rockers on the fail-
safe dip switch corresponds to an output on the board. Set
the rocker UP to close the relay and turn the output ON
during network failure. Set the switch DOWN to open the
relay and turn the output OFF during network failure.
9.2.4

Relay Output Test Mode

Newly released versions of the MultiFlex I/O board
family and the 8ROSMT have a new feature that allows
relays to be manually energized and de-energized without
use of an override from a Hand-Held Terminal when the
board is offline. When a MultiFlex is in Relay Output Test
Mode, the output fail-safe dip switches may be used to
cycle the states of the relay outputs. The feature is
designed to help manufacturers of panels test output wir-
ing quickly and easily without need for a site controller or
HHT.
Relay Output Test Mode is available in the following
The 8RO, 8IO, and MultiFlex Outputs
Set Jumper
Set or Wire
Switch Form C
To: Contacts
To:
UP N.C.
UP N.O.
DOWN N.O.
DOWN N.C.
product versions:
Board Type
8RO-SMT output board
MultiFlex 168, 88, 168AO,
and 88AO combination input/
output boards
MultiFlex 168DO combina-
tion input/output boards with
digital outputs
MultiFlex 1616LAO and
1616LDO combination input/
output board
MultiFlex 1616L combina-
tion input/output board w/o
analog outputs
To activate Relay Output Test Mode for MultiFlex, set
switches 1-8 on DIP Switch banks S3 and S4 to the OFF
(LEFT) position. For 8ROSMT, set switches 1-8 on DIP
Switch bank S1 (NETWORK) to the OFF (DOWN) posi-
tion. The board will enter Relay Output Test Mode.
In Relay Output Test Mode, fail-safe dip switches 1-8
(located on the output board layer of MultiFlex I/O boards,
and next to switch bank S1 on the 8ROSMT) can be used
to change the state of the relays.
A fail-safe switch in the ON position will cause the
corresponding relay to be energized (i.e., OPEN on the
N.C. terminals, and CLOSED on the N.O. terminals). A
fail-safe switch in the OFF position will cause the relay to
be de-energized (i.e., CLOSED on the N.C. terminals and
OPEN on the N.O. terminals).
The LED that shows the output state will also be ON
when the switch is ON and OFF when the switch is OFF.
To exit Relay Output Test Mode, set the address
switches S3 and S4 to any position other than "all OFF."
The fail-safe switches will resume normal operation.
Version
1.20F01
and above
1.60F01
and above
1.60F01
and above
1.30F01
and above
1.20F01
and above
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Input and Output Setup 9 11