T I M E R S A N D M O D E S E L E C T I O N S S 1 & S 2; Mode Selections - S1; Fast Run Timer - S1; Close Timer Selection - S2 - Chamberlain MEGA ARM / MEGA ARM TOWER Installation And Service Manual

T I M E R S A N D M O D E S E L E C T I O N S S 1 & S 2
MODE SELECTIONS - SWITCH PACK S1 (5-8)
SWITCH 5: ON -Will allow J5 input #4 to operate as a pulse
open/pulse close function.
SWITCH 6: ON -Will fire relay if gate is pushed UP from closed
limit, used with clutch option. Also
ANTI TAIL-GATE ALARM, if tailgating is detected by close loop,
K1 relay will fire. When using clutch option, turning on S1-6 &
S2-7, gate will close by timer whenever forced up.
SWITCH 7: Used to enable arm to work in reverse direction,
see page 9.
SWITCH 8: Off will make K1 relay activate during open cycle
(use with buzzers, counters, etc.). On will pulse K1 relay when
OPEN LIMIT (OLS) is reached (activates a swing or slide gate
its lane).
See also page 18, RELAY OUTPUT-K1
FAST RUN TIMER - SWITCH PACK S1 (1-4)
The fast run timer sets the time that the operator runs at full
speed. The slow start ramp time is fixed. The slow stop ramp
time is fixed but can be overrun by the fast run time if not
adjusted properly. When adjusting make sure the slow stop ramp
completes before the close limit. With all switches off, the default
fast run time is 1.5 seconds. Changing settings will adjust fast
run timer by 1/8 second increments. (Example: #2 on equals .25
seconds, #4 on equals 1 second. #2 and #4 on equals 1.25
seconds, etc.)
CLOSE TIMER - SWITCH PACK S2 (1-5)
NOTE: Default setting is off.
On the MEGA ARM the switches 1-5 on S2 are for the closing
time delay to select the period of time that the gate stays open
after the obstruction sensor has reversed and re-opened the arm
or if the S2-7 timer to close is turned on. The default will keep
the gate up for 4 seconds to allow the vehicle to be moved from
the gate arm path. Changing settings 1 - 5 will increase or
decrease this hold open time. The default of 3 ON and 1, 2, 4, 5
OFF will provide a 4 second close time delay.
MODE SELECTIONS - SWITCH PACK S2 (6-8)
SWITCH 6 - INPUT MEMORY: Activates multiple vehicle
memory at auxiliary input terminal #4 on J5.
SWITCH 7 - AUTO CLOSE TIMER: Default is OFF. On will close
gate by timer when all inputs are cleared. Time is set by using
S2 1-5 switches. (WARNING: Special care should be used to
avoid arm from closing on cars. Use safety loops, stop loops,
photo beams and a long enough time delay.)
NOTE: Can be used with multiple vehicle memory buffer to allow
gate to close and reset count memory to zero. When using clutch
option, turning on S1-6 & S2-7, gate will close by timer
whenever forced up.
SWITCH 8 - AUTO OPEN ON POWER FAILURE: When switch
number 8 is in the ON position, the operator will automatically
open the gate approximately 15 seconds after the loss of
power. Once power is restored the operator will resume normal
operation after the first car passes closing loop or if close timer
S2-7 in turned on (it is recommended to allow the gate to close
by loop, not by timer).
1/8ths Seconds 1 - - - - 2 - - - - 4 - -- - -8
S1
ON
OFF OFF
Switch in
OFF position
1 2 3 4 5 6 7 8
Fast Run Timer 1-4
1 1
J2
AUX LIMITS M/S
D8 D1Ø
S1 S2
1 2 3 4 5 6 7 8 1 2 3 4 5 6
R1 R12
C2
U1
OLS
D7
OPEN
X1
R1Ø
D6
R9
BRAKE
R8
D5
CLOSE
D4
R7
CLS
D3
R6
IRD
U3
D2
R5 U2
R4
R3
Q1
D9
D1
R2 R11
HBEAT
K1 D11 D12
U19
Aux Relay
J1 C NC NO DC
1
1
PWR
Seconds
1 - - 2 - -
S2
ON
OFF OFF
1 2 3 4 5 6 7 8
Close Timer 1-5
10
Shows
Default
Settings
OFF
OFF OFF OFF
OFF
1 2 3 4 5 6 7 8 9 1Ø 11 12
MANUAL
J5
OPEN
Q2
J3
R14
S3 T2 T4 T6 T8
R18
T3 T5
T1 T7
R17
OPEN 1 OPEN 2 OPEN 3 AUX 4 SAFETY 5 CLOSE 6 BACK 7 SHADOW 8
7 8 CLOSE
R16
R21
R24 R35 R41 R46 R5Ø R61
C3
U8 U9 U11 U13 U14 U15
U4
R23 R34 R4Ø R45 R49 R6Ø
R22 R33 R39 R44 R48 R59
R43
R43
R26
U6
R63
D21
IRD1
R25
R58
C12
U5 U12
U7
DX3
U1Ø
DX4
R57
C13
R56
C4
DX2
R38
CPU
JP2
R37
R51
F2 R55
R19
D2Ø
1A DC
R2Ø
C8 WARNING FOR
R62
+
C2Ø CONTINUOUS
F1
C5 +
PROTECTION
AGAINST FIRE
DX1
REPLACE ONLY
+ F4
WITH THE SAME
B1
TYPE AND RATING
BAT LO AC POWER
OF FUSE
F3
D14
R13
J4 MOTOR
BAT– MOV
TR
ACC+ ACC– BAT– BAT+ 24VAC XFMR MOTOR
Shows
Default
Settings
4 - - 8 - - 16
ON
OFF
OFF OFF OFF
Mode Selection 6-8
OFF
C16
U16
OFF