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75.5501.02 EN 20091102 (75.5500)
The MC25 function provides a sequence for Relay 1 and/
or Relay 2 triggered by Input 1 or ‘WET’ Input. Adjustable
parameters include
H 1
for activation hold time of Relay 1,
H 2
for activation hold time of Relay 2 and
D 1
for delay between
activation of Relay 1 to Relay 2. A re-activation of Input 1 or
‘WET’ Input before the sequence expires will re-start both
hold timers and keep the relays active. A maintained input will
freeze both hold timers, thus keeping their relays active until the
input is released, which will allow the hold timers to expire and
deactivate the relays normally.
NOTE
: The delay timer will only fire one time during initial
activation or maintained input.
NOTE: The functionality for MC25 has changed slightly in this
version as it will also check the ‘WET’ Input.
A typical application is a security door in which you have a push-
plate to start the sequence to unlock the security device, such as
a Maglock or electric strike and then activate the door controller.
For this scenario the push-plate would be wired to Input 1, the
security device would be wired to Relay 1 and the door controller
would be wired to Relay 2. An example wiring diagram for this
scenario is shown.
NOTE: While the ‘WET’ Input is not involved in our typical
application, it will still function as Input 1 does if used
MC25 SETUP
1. Wire the Br3 accordingly.
2. Select the MC25 as the function according to the steps outlined in Section 5 – Selecting the Function.
• Press and hold both push buttons (INCR & PARAM) for three (3) seconds to activate the display.
• Press the INCR button to toggle through each function and select
25
.
3. Set the MC25 parameters according to the steps outlined in Section 5 – Selecting the Function.
• Press PARAM button to cycle through and set the parameters.
• Press the INCR button to increment the parameter’s value.
Parameters for the MC25 function are shown in the chart. Set the parameters as needed for the application, and wait for the display to
become inactive to save the configuration.
PARAMETER
(PARAM Button)
DESCRIPTION
POSSIBLE VALUES
(INCR Button)
H1
Relay 1 hold time
‘
00
’ through ‘
60
’ - Relay 1 hold time will not begin counting down until the release of Input 1 or
‘WET’ Input.
H2
Relay 2 hold time
‘
00
’ through ‘
60
’ - Relay 2 hold time will not begin counting down until the delay between
Relay 1 and Relay 2 expires.
D1
Delay between
Relay 1 and Relay 2
‘
00
’, ‘_
1
’ (1/4), ‘_
2
’ (1/2), ‘_
3
’ (3/4), ‘
01
’ through ‘
60
’ seconds. The delay time will begin
counting down with the activation of the sequence.
4. Once programming is complete, test the Br3. Trigger the sequence via Input 1 or ‘WET’ Input. Ensure that the sequence runs and the
relays activate and the timers are as programmed. The display will show
R1
when Relay 1 is energized,
R2
when Relay 2 is energized and
R=
when both Relay 1 and Relay 2 are energized at the same time.
5. Upon completion of the above steps, walk test the door to ensure all functions, timers, sensors, etc. are working as intended, and that the
system is in compliance with all applicable standards (i.e. ANSI A156.10, A156.19).
6E Function
25
- 2 Relay Sequence (MC25)
G
N
D
IN
-1
G
N
D
IN
-2
G
N
D
IN
-3
G
N
D
IN
-4
1
2
3
4
WET
WET
WET
N
C
N
O
C
O
M
N
C
N
O
C
O
M
12
-2
4V
AC
/D
C
RELAYS
1
2
POWER
RELAY 1
IN
C
R
.
PARAM
SETUP
D
C
AC
D
R
Y
W
ET
INPUTS
2 5
N
C
N
O
C
O
M
3
Br
3
CAUTION: RELAY 1 WET
OUTPUT OPTION
IS ACTIVE FOR
ALL FUNCTIONS.
12 to 24
VAC/VDC
+/- 10%
To Activation Circuit
of Door Control.
Pushplate or other
Dry Contact Device.
‘WET’
12 to 24
VAC/VDC
+/- 10%
INPUT
+ -
Typically Connected to
Lock Device. When DC ‘WET’
Output is Selected for Relay 1,
COM Terminal is Positive (+).
