Emerson E2 Manuel D’Utilisation

Page de 283
The 8RO, 8IO, and MultiFlex Outputs
Input and Output Setup
 • 
9
-
11
(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.
Table 9-3 - Output Board Fail-Safe and Switch Settings
Controller 
Command vs. 
Contact State
Fail 
State
Set 
Switch 
To:
Set Jumper 
or Wire 
Form C 
Contacts 
To:
ON=CLOSED
OFF=OPEN
ON
UP
N.C.
ON=CLOSED
OFF=OPEN
OFF
UP
N.O.
ON=OPEN
OFF=CLOSED
ON
DOWN
N.O.
ON=OPEN
OFF=CLOSED
OFF
DOWN
N.C.
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 
product versions:
Board Type
Version
8RO-SMT output board
1.20F01 
and above
MultiFlex 168, 88, 168AO, 
and 88AO combination input/
output boards
1.60F01 
and above
MultiFlex 168DO combina-
tion input/output boards with 
digital outputs
1.60F01 
and above
MultiFlex 1616LAO and 
1616LDO combination input/
output board
1.30F01 
and above
MultiFlex 1616L combina-
tion input/output board w/o 
analog outputs
1.20F01 
and above
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.