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  The MC28 function provides a sequence for Relay 1 and/

or Relay 2 triggered by Input 1 or ‘WET’ Input.  Additionally 

Input 2 provides a door position switch input which allows the 

delay to run when Input 2 is opened, but not run when closed.  

Simply put, this function is an MC25 with a normally opened 

door position switch input to determine if the delay should run.  

Adjustable parameters include 

H1

 for activation hold time of 

Relay 1, 

H2

 for activation hold time of Relay 2 and 

D1

 for delay 

between activation of Relay 1 to Relay 2.   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 when Input 2 is opened. 

 

NOTE:  The door position switch must have an opened contact 

when the door is closed, and a closed contact when it is 

not. (Position switch logic is different than 21, 22, 50 and 

55.) 

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 

and an additional door position switch.  For this scenario the 

push-plate would be wired to Input 1, the position switch would 

be wired to Input 2,  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.

MC28 SETUP

1.  Wire the Br3 accordingly.

2.  Select the MC28 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 

28

.

3.  Set the MC28 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 MC28 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.  Ensure that the delay between Relay 1 and Relay 2 runs when the 

sequence starts from the door closed position.  Now, re-run the sequence; however this time before the door reaches the closed position, 

reactivate the door and ensure that the door reactivates immediately as the delay between timer, 

D1

 does NOT run.

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).

6F   Function 

28

 - 2 Relay Sequence w/Position Input (MC28)

75.5501.02  EN   20091102   (75.5500)   

 

 

 

 

 

 

 

 

Page 8 of 15

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 8

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 (+).

Input 2 is for the Door Position Switch.

Switch is open when door is closed.

Содержание Br3

Страница 1: ...n switch input for which closing it will re inhibit Input 1 Simply put this function is a combination between a LE21 and MC25 6 2 5 MC25 2 Relay Sequence Provides a sequence for Relay 1 and or Relay 2 triggered by Input 1 or WET Input 7 2 8 MC28 2 Relay Sequence w Door Position Input Provides a sequence for Relay 1 and or Relay 2 triggered by Input 1 or WET Input Additionally Input 2 provides a do...

Страница 2: ...IPTION SPECIFICATION Supply Voltage 12 to 24 VAC VDC 10 Contact Rating DRY Relay 1 Relay 2 Relay 3 Contact Rating WET Relay 1 3 A at 24 VAC 3 A at 30 VDC 3 A at 24 VAC 3 A at 30 VDC 1 A at 24 VAC 1 A at 30 VDC 1 A Current Consumption 30 to 130 mA DRY Output Temperature Range 15 F 26 C to 150 F 65 C Dimensions 5 2 133mm W x 2 2 55mm D x 1 25mm H Input Specification Inputs 1 to 4 DRY Contact WET Inp...

Страница 3: ...long as no relays are active the display will show the function selected otherwise it will show those relays Once the values are changed they are only saved after the display goes inactive again 5 seconds NOTE Remember that the INCR push button always increments the value of the parameter that you are looking at and the PARAM push button toggles through the available parameters NOTE To change only...

Страница 4: ...system is in compliance with all applicable standards i e ANSI A156 10 A156 19 75 5501 02 EN 20091102 75 5500 Page 4 of 15 6A Function 10 Timer Module MC10 GND IN 1 GND IN 2 GND IN 3 GND IN 4 1 2 3 4 WET WET WET NC NO COM NC NO COM 12 24V AC DC RELAYS 1 2 POWER RELAY 1 INCR PARAM SETUP DC AC DRY WET INPUTS 1 0 NC NO COM 3 Br3 CAUTION RELAY 1 WET OUTPUT OPTION IS ACTIVE FOR ALL FUNCTIONS 12 to 24 V...

Страница 5: ...le parameter for the LE21 function is shown in the chart Set it 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 an activation input 4 Once programming is complete test the Br3 Attemp...

Страница 6: ...M button to cycle through and set the parameters Press the INCR button to increment the parameter s value Parameters for the LE22 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 wil...

Страница 7: ...ding 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 VA...

Страница 8: ...ers Press the INCR button to increment the parameter s value Parameters for the MC28 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 o...

Страница 9: ...METER 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 2 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 tim...

Страница 10: ... application it will still function as Input 1 does if used MC35 SETUP 1 Wire the Br3 accordingly 2 Select the MC35 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 35 3 Set the MC35 parameters according to the s...

Страница 11: ...ay 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 H2 Relay 2 hold time 00 through 60 Relay 2 hold time will not begin counting down until the release of Input 2 4 Once programming is complete test the Br3 Wait until both doors a...

Страница 12: ...set for the MC55 as the state of Relay 1 and Relay 2 are not based on time so just wait for the display to become inactive to save the configuration 4 Once programming is complete test the Br3 Wait until both doors are closed then trigger Relay 1 via Input 1 Ensure that Relay 1 changes state and that is maintained The display will show R1 when Relay 1 is energized Test the interlock by attempting ...

Страница 13: ...n to increment the parameter s value Parameters for the MC65 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 for inbound or...

Страница 14: ...e Function Press PARAM button to cycle through and set the parameters Press the INCR button to increment the parameter s value Parameters for the MC75 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 ...

Страница 15: ...programmed 3 Jumper an active Input and ensure that the fault is not within the wiring If module works when jumped trace wiring from Inputs relays 4 Replace module Module reacts to input but has no output 1 Wrong outputs are connected 2 Incorrect wiring 3 Incorrect jumper settings 4 Faulty module 1 Check to ensure that the proper outputs are connected per the function selected 2 Trace all wiring t...

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