Stanley MA900n, Installation And Owner'S Manual

© 2005, The STANLEY WORKS. ALL RIGHTS RESERVED.

203936 Rev. C

MA900 Installation Manual

22

Swing-Safe Technology

Fig. 32

Reversal force potentiometer

This electronic safety control will sense an obstruction during the
opening cycle of the door. The operator will immediately reverse
the door direction, allowing time for the obstruction or person to
clear the swing path area of the door. 

Reversal force SNS:  

Controls the amount of force required to

cause the door to stop and reverse. The

ANSI standard specifies

that this force must be less than 15 lbf measured 1 inch from the latch
edge of the door at any point in the cycle. Use a force gauge to
measure the force. Turn the potentiometer cw to decrease, ccw 
to increase, the reversal force. (see Fig. 32).

Operation Timers

Fig. 33

Operational timers

1.

Hold Open Time – External Switch:

TD1 controls the time 

interval from loss of the signal from an actuator (push plate 
or radio-frequency transmitter) to the start of the door-close 
operation. The time delay is adjustable from 1-30 sec. 

The

ANSI Standard requires

that the delay be set for a minimum 

of 5 sec. Turn the potentiometer cw to increase, ccw to
decrease, the Hold Open time.

2.

Hold Open Time – Magic-Touch™:  

TD2 controls the time 

interval from Magic-Touch™ actuation to the start of the door-
close operation. The time delay is adjustable from 1-30 sec.

The ANSI Standard requires

that the time delay be set for a 

minimum of 5 sec. Turn the potentiometer cw to increase, ccw
to decrease, the Hold Open time.

Optional Sequencing Timers

Fig. 34

Sequencing timers

Single Door Function

No adjustment to the timing and sequencing module should be
necessary for single door function.  Verify time delay on the module
is set to minimum by following the Time Delay Module Installation
Instructions.  (See fig. 34 for illustration of Time Delay Module.)

Vestibule Function

To program the timing and sequencing module for vestibule function
refer to the Time Delay Module Installation Instructions.

TDM

INPUT 4

INPUT 3

INPUT 2

INPUT 1

12-24V AC/DC

INPUT 1

COM

COM

PROGRAM

MODE BUTTON

DISPLAY
ADJUSTMENT

LED DISPLAY KEY

o1= dr

y

o1= w

e

t

Output #1

Output #2

d1 =delay 1

d2 = delay 2

d3 = delay d1 to d

d4 = delay d2 to d1

i1 = input 1 (n.o./n.c.)

i2 = input 2 (n.o./n.c.)

i3 = input 3 (n.o./n.c.)

i4 = input 4 (n.o./n.c.)

o1 = output 1 (n.o./n.c.)

o2 = output 2 (n.o./n.c.)

N.C

.

COM

N.O

.

N.C

.

COM

N.O

.