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User Instructions UM1M820BNA
Spec No. 1M820BNA (Model M820B) Issue AH, March 4, 2013
Spec No. 1M820DNA (Model M820D)
Chapter 2. Operation 33
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Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
After confirming the change, the LVD will momentarily toggle to the chosen state. The LVD then
reverts back to being controlled by the ACU+.
2.5.42 Using the Relay Test Feature
Note: The relay test can only be performed when no alarms are present.
Automatic Test
When placed in Relay Automatic Test Mode, all relays on the IB2 board deenergize (when set for Fail
Safe), then one-by-one each relay energizes for the time period selected and then deenergizes. If the
system is equipped with an EIB board, after the IB2 relays are tested, one-by-one each relay on the EIB
board deenergizes for the time period selected and then re-energizes. At the end of the test, all relays are
returned to their normal state (if no alarms are present).
Local Menu Navigation: Main Menu / Settings / Power System / General / set the Relay Test Time.
then
Main Menu / Settings / Power System / General / Relay Test / set to Automatic.
Note: The relay test can be exited at any time by setting the Relay Test to Disabled.
WEB Menu Navigation: Device Information / Power System / Settings Tab / set the Relay Test Time.
then
Device Information / Power System / Settings Tab / Relay Test /
set to Automatic.
Note: The relay test can be exited at any time by setting the Relay Test to Disabled.
Individual Test
When placed in Relay Individual Test Mode, relays can be tested individually. This is the same procedure
as “2.5.40 Manually Forcing Relays” except you do not place the Controller in Manual Mode.
Local Menu Navigation: Main Menu / Settings / Power System / General / Relay Test / set to Individual.
then
Main Menu / Manual / Power System / Relay Output [number]
(individually you can set the state of the relays on the IB2 Board).
Main Menu / Manual / EIB / EIB1 / Relay Output [number]
(individually you can set the state of the relays on the EIB Board).
Select the other state for an alarm relay (active / not active).
After confirming the change, the alarm relay will momentarily toggle to the chosen state. The alarm
relay then reverts back to being controlled by the ACU+.
When done, set “Relay Test” to “Disabled”. Note that if there is no User interaction for 10 minutes, the
Relay Test will automatically revert to the “disabled” state.
WEB Menu Navigation: Device Information / Power System / Settings Tab / Relay Test /
set to Individual.
then
Device Information / Power System / Control Tab.
(individually you can set the state of the relays on the IB2 Board).
Device Information / EIB Group / EIB 1 / Control Tab
(individually you can set the state of the relays on the EIB Board).
The Control Tab allows you to change the state of an alarm relay.
In the "Set value" box, select the other state for an alarm relay (active / not active).
Click on "set".
After confirming the change, the alarm relay will momentarily toggle to the chosen state. The alarm
relay then reverts back to being controlled by the ACU+.