Morrison Bros. co. 918AC Series Manual

1
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918AC‑0160 PP
!
!
Rev. 09-27-2022
918AC Series Expansion Board
Installation, Operation, and Maintenance Instructions
The 918AC Expansion Board is designed to provide additional output congurability to the 918AC series
System Interface. The additional output congurations include: non-persist, auto-timeout with congurable
timeout value, and latching modes.
Failure to follow any or all of the warnings and instructions in this document could result in a hazardous
liquid spill, which could result in property damage, environmental contamination, re, explosion, serious
injury or death.
Le fait de ne pas se conformer à l’un ou l’autre des avertissements ou à l’une ou l’autre des directives
apparaissant dans ce document pourrait donner lieu à des déversements de liquides dangereux, lesquels
pourraient engendrer des dommages matériels, des risques de contamination environnementale,
d’incendie ou d’explosion, des blessures graves ou la mort.
Contents
Installation..........................................................................................................................................1
Steps to Congure the 918AC Series System Interface Motherboard ..............................................2
Non-Persist Output Function ........................................................................................................2
Auto-Timeout Output Function ....................................................................................................3
Latching Mode Output Function ..................................................................................................4
DIP Switch Conguration Tables ....................................................................................................6
Installation
Figure 1 - Stando and Module Installation
1. Turn o the power to the 918AC Console.
2. Remove and retain the screw that is in the 918AC Motherboard, located to the left of the P101 connector and
below the reset button. It is the same location in which the stando is installed in Figure 1.
3. Install the stando provided in the kit into the same threads the screw was in, shown in Figure 1.
4. Install the 918AC Expansion Module by plugging it into the P101 connector on the 918AC Motherboard
with the orientation shown in Figure 1.
NOTE: If the 918AC Expansion Module does not t correctly, do not force it. First, verify the
orientation of the expansion board shown in Figure 1. Then check that the motherboard version
is compatible. Compatible motherboards will have a pin removed corresponding to the keyed
pin on the expansion module.

2
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918AC‑0160 PP
Rev. 09-27-2022
5. Install the screw that was removed in step 1 into the stando and through the mounting hole of the 918AC
Expansion Module as shown in Figure 1.
6. After the 918AC Expansion Module has been installed, restore power to the 918AC Console.
7. Once the 918AC Expansion Module is connected, congure the settings then press the reset button on the
Module. The reset button will need to be pressed any time the settings are changed.
Steps to Congure the 918AC Series System Interface Motherboard
Non-Persistent Output Function
The Non-Persistent relay output function allows each relay output to be reset to its normal condition once the
active alarm has been acknowledged.
NOTE: The Non-Persistent function can be used with the Auto-Timeout function (see page 3). However, the
relay output Latching Mode (see page 4) takes precedence over the Non-Persistent function.
Figure 2 - Non-Persistent Relay Output Conguration
1. Locate the four position, Non-Persist switch, SW 1, on the expansion board (see Figure 2).
2. Place the DIP switch Position One in the “ON” position to congure the Motherboard to reset the channel 1
relay output when the triggering alarm condition(s) have been acknowledged. Place the DIP switch Position
One in the “OFF” position to prevent the alarm acknowledgement from changing the state of the channel 1
relay output.
3. Place the DIP switch Position Two in the “ON” position to congure the Motherboard to reset the channel 2
relay output when the triggering alarm condition(s) have been acknowledged. Place the DIP switch Position
Two in the “OFF” position to prevent the alarm acknowledgement from changing the state of the channel 2
relay output.
4. Place the DIP switch Position Three in the “ON” position to congure the Motherboard to reset the channel 3
relay output when the triggering alarm condition(s) have been acknowledged. Place the DIP switch Position
Three in the “OFF” position to prevent the alarm acknowledgement from changing the state of the channel 3
relay output.
5. Place the DIP switch Position Four in the “ON” position to congure the Motherboard to reset the channel 4
relay output when the triggering alarm condition(s) have been acknowledged. Place the DIP switch Position
Four in the “OFF” position to prevent the alarm acknowledgement from changing the state of the channel 4
relay output.
6. Locate the reset push button on the expansion board.
7. Press and release the reset push button to complete the conguration of the Non-Persist relay output settings.

3
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918AC‑0160 PP
Rev. 09-27-2022
Auto-Timeout Output Function
The Auto-Timeout relay output function allows each relay output to be reset to its normal condition after a
congurable amount of time. The Timeout value can be adjusted in 3 minute increments from 3 to 30 minutes
using the rotary switch. The timeout value is calculated using the following formula:
Timeout (minutes) = (n + 1) x3
The value of n in the formula is set using the rotary switch. For example, a value of 0 will set the Auto-Timeout
to 3 minutes and a value of 2 will set the Auto-Timeout to 9 minutes.
NOTE: The Auto-Timeout function can be used with the Non-Persistent function (see page 2). However, the
relay output Latching Mode (see page 4) takes precedence over the Auto-Timeout function.
Figure 3 - Auto-Timeout Relay Output Conguration
1. Locate the rotary switch, Timeout Value, SW 4, on the expansion board mezzanine (see Figure 3).
2. Use a small screwdriver to turn the rotary dial to the desired auto-timeout value. A value of “0” corresponds
to a 3 minute timeout value. The timeout value will start at 3 minutes (position “0” of the dial) and increase
by 3 minutes for each count of the rotary dial, up to the maximum timeout of 30 minutes (position “9” of the
dial).
NOTE: The auto-timeout value is applied to all outputs with the auto-timeout setting enabled. Dierent values
cannot be set for individual outputs.
3. Locate the four position, Auto-Timeout switch, SW 2 on the Motherboard (see Figure 3).
4. Place the DIP switch Position One in the “ON” position to congure the Motherboard to reset the channel
1 relay output when the auto-timeout timer has expired. Place the DIP switch Position One in the “OFF”
position to prevent the auto-timeout timer from changing the state of the channel 1 relay output.

4
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918AC‑0160 PP
Rev. 09-27-2022
5. Place the DIP switch Position Two in the “ON” position to congure the Motherboard to reset the channel
2 relay output when the auto-timeout timer has expired. Place the DIP switch Position Two in the “OFF”
position to prevent the auto-timeout timer from changing the state of the channel 2 relay output.
6. Place the DIP switch Position Three in the “ON” position to congure the Motherboard to reset the channel
3 relay output when the auto-timeout timer has expired. Place the DIP switch Position Three in the “OFF”
position to prevent the auto-timeout timer from changing the state of the channel 3 relay output.
7. Place the DIP switch Position Four in the “ON” position to congure the Motherboard to reset the channel
4 relay output when the auto-timeout timer has expired. Place the DIP switch Position Four in the “OFF”
position to prevent the auto-timeout timer from changing the state of the channel 4 relay output.
8. Locate the reset push button on the expansion board mezzanine.
9. Press and release the reset push button to complete the conguration of the Auto-Timeout relay output
settings.
Latching Mode Output Function
The relay output Latching Mode allows the relay output to be latched during an active alarm and remain
latched until a congurable reset condition occurs. The Latching Modes can only be congured for relay output
channels 1 and 2. See the ‘Output Modules’ section on page 8 for details on conguring the outputs to be
triggered by input channel alarms.
NOTE: The Latching Mode function takes precedence over the Non-Persistent and Auto-Timeout functions.
Channel 1 Latching Mode Channel 2 Latching Mode
Disabled Disabled
Reset by Input 2 Reset by Input 1
Reset by Input 3 Reset by Input 3
Reset by Input 4 Reset by Input 4

5
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918AC‑0160 PP
Rev. 09-27-2022
Figure 4 - Latching Mode Relay Output Conguration
1. Locate the four position, Latch Modes switch, SW 3, on the expansion board mezzanine (see Figure 4).
2. Use DIP switch Positions One and Two to set the Latching Mode for the channel 1 relay output
a. To disable the channel 1 relay output latching mode place DIP switch Positions One and Two in the
“OFF” position.
b. To enable the channel 1 relay output latching mode and congure the channel 2 input as the reset
condition place DIP switch Position One in the “ON” position and Position Two in the “OFF” position.
c. To enable the channel 1 relay output latching mode and congure the channel 3 input as the reset
condition place DIP switch Position One in the “OFF” position and Position Two in the “ON” position.
d. To enable the channel 1 relay output latching mode and congure the channel 4 input as the reset
condition place DIP switch Position One and Two the “ON” positions.
3. Use DIP switch Positions Three and Four to set the Latching Mode for the channel 2 relay output
a. To disable the channel 2 relay output latching mode place DIP switch Positions Three and Four in the
“OFF” position.
b. To enable the channel 2 relay output latching mode and congure the channel 1 input as the reset
condition place DIP switch Position Three in the “ON” position and Position Four in the “OFF” position.
c. To enable the channel 2 relay output latching mode and congure the channel 3 input as the reset
condition place DIP switch Position Three in the “OFF” position and Position Four in the “ON” position.
d. To enable the channel 2 relay output latching mode and congure the channel 4 input as the reset
condition place DIP switch Position Three and Four in the “ON” positions.
4. Locate the reset push button on the expansion board mezzanine.
5. Press and release the reset push button to complete the conguration of the Non-Persist relay output settings.

6
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918AC‑0160 PP
Rev. 09-27-2022
DIP Switch Conguration Tables
Input Module
Table 1 Expansion board SW1 – Non-Persistent Output
Position
Setting
ON
This output channel relay will be
reset to its normal condition when
the alarm has been acknowledged
OFF
The alarm acknowledgement
has no e󰀨ect on this output
1 Channel 1 Channel 1
2 Channel 2 Channel 2
3 Channel 3 Channel 3
4 Channel 4 Channel 4
Table 2 Expansion board SW2 – Output Auto-Timeout
Position
Setting
ON
This output channel relay will be
reset to its normal condition when
the auto‑timeout timer has expired
OFF
The auto‑timeout timer has no
e󰀨ect on this output
1 Channel 1 Channel 1
2 Channel 2 Channel 2
3 Channel 3 Channel 3
4 Channel 4 Channel 4
Table 3 Expansion board SW4 – Output Timeout Value
Position
Setting
Relay Output Auto-Timeout
0 3 minutes
1 6 minutes
2 9 minutes
3 12 minutes
4 15 minutes
5 18 minutes
6 21 minutes
7 24 minutes
8 27 minutes
9 30 minutes

7
Morrison Bros. Co. ‑ Dubuque, IA ‑ 800‑553‑4840
918AC‑0160 PP
Rev. 09-27-2022
Table 4 Expansion board SW3 – Latch Modes
Position Setting
1 2
OFF OFF Channel 1 Latching Mode Disabled
ON OFF Channel 1 Latching Mode Enabled ‑ Input 2 Reset
OFF ON Channel 1 Latching Mode Enabled ‑ Input 3 Reset
ON ON Channel 1 Latching Mode Enabled ‑ Input 4 Reset
Position Setting
3 4
OFF OFF Channel 2 Latching Mode Disabled
ON OFF Channel 2 Latching Mode Enabled ‑ Input 1 Reset
OFF ON Channel 2 Latching Mode Enabled ‑ Input 3 Reset
ON ON Channel 2 Latching Mode Enabled ‑ Input 4 Reset