Nabco GYRO TECH Magnum IV Control Guide

Magnum IV Control
Wiring & Adjustment Manual
for
Gyro Tech Swing Door Operators
Part Number 15-10682
1-4-06 Revision
NABCO ENTRANCES Inc.
S82 W18717 Gemini Drive, P.O. Box 906
Muskego, WI 53150
Phone: [phone]
Fax: [phone]
Technical Assistance: 866-622-8325
www.nabcoentrances.com
Email: [e-mail]

Magnum IV Control Manual for Gyro Tech Swing Door Systems
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CAUTION
Read these safety practices before installing, operating or servicing the automatic door. Failure to follow these
practices may result in serious consequences.
Read, study and understand the operating instructions contained in or referenced in this manual before operating.
If you do not understand the instruction, ask the installing qualified technician to teach you how to use the door.
This manual and the owners’ manual must be given to and retained by the purchasing facility or end user.
If the door appears broken or does not seem to work correctly, it should be immediately removed from service and
a qualified service technician contacted for corrective action.
Disconnect power at the fused disconnect during all electrical or mechanical service. When uncertain whether
power supply is disconnected, always verify using a voltmeter.
All electrical troubleshooting or service must be performed by qualified electrical technicians and must comply
with all applicable governing agency codes.
It is the responsibility of the installing door technician to install all warning and instructional labels in accordance
with the applicable ANSI standard.
It is the responsibility of the purchasing facility or end user to keep warning and instructional labels and literature
legible, intact and with the door.
Replacement labels and literature may be obtained from local NABCO ENTRANCES INC. authorized
distributors. If the name of the local distributor is unknown, contact NABCO ENTRANCES INC. at (877-622-
2694) for assistance.
Do not place finger or uninsulated tools inside the electrical control box. Touching wires or other parts inside the
enclosure may cause electrical shock, serious injury or death.
All adjustments should be made with a small screwdriver. DO NOT use a pencil.
The ground wire from the Magnum 120 VAC harness and the ground wire from the 120 VAC “in” line must be
attached to the ground screw which is located in the header.
Final installation must conform to current versions of ANSI 156.19 for Low Energy swingers or ANSI 156.10 for
Full Automatic Installations.

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Table of Contents
To The Installer Page 4
Overview Page 4
Specifications Page 5
Visual Indicators Page 5
Magnum IV Diagnostic LED Function Chart Page 6
Wiring Connectors Page 7-8
Door Positions Page 8
Adjustments Page 9
Potentiometers Page 9-11
Dip Switches Page 11
Troubleshooting Page 12-13
Section A - Wiring and Adjustment for GT-300, GT-400 and GT-500 Operators Page 14
Back Check and Latch Micro Switches Page 14
Required Wiring Harnesses Page 15
Wiring for Rocker switch Page 16
Wiring for Break–out Page 16
General Wiring - Single Diagram Page 17
General Wiring – Simultaneous Pair Page 18
Section B - Retrofit Kit Manual, Model 300/400/500 Swing Door System With Magnum IV Control Page 19
Tools required Page 19
Hard Ware Kit List Page 20
Conversion of a GT300/400/500 to a Magnum IV Page 21-23
General Wiring - Single Diagram Page 24
General Wiring – Simultaneous Pair Page 25
Section C - Wiring and Adjustment for GT-710 Operators Page 26
General Wiring Diagram - Single Door Page 27
Wiring Diagram for Wall Switch Activation Page 28
Wiring Diagram for Simultaneous Pairs Page 29
Transformer Installation and Wiring for 240 Volts Page 30
Wiring Diagram for Radio Activation Page 31
Wiring Diagram for 4 Wire Radio Receiver and Electric Strike Page 32
Wiring Diagram for Electric Strike and Fire Alarm Systems Page 33

Magnum IV Control Manual for Gyro Tech Swing Door Systems
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CURRENT
LIMIT MOTOR
J1
R28
MAGNUM IV
Fuse 2: 3A 120/240
DN0033
BLACK
RED
LED
TRANSFORMER
CAPACITOR
O
F F
1 2
AUX
PWR
4
J2
3
J5
AC IN
F2
SW2
SW1
F1
RELAY RELAY
J4
TDAS
SIGNAL
INPUT
TDPG
LCHK
CLOSE
Fuse 1: 0.5A 24 VAC
STOP
OPEN
BCHK
To The Installer The purpose of this manual is to familiarize the purchaser with the proper installation
and operation of this system. It is essential that this equipment be properly installed
and operational before the door is used by the public. It is the purchaser’s
responsibility to inspect the operation of the entrance system to be sure it complies with
any applicable standards. In the United States, ANSI Standard 156.19 usually covers
this type of door. Other local standards or codes may apply. Use them in addition to
the ANSI Standard.
Instruct the building owners/operator on the essentials of the operation of the door and
this device. The owner should follow these instructions to determine whether the door
is operating properly and should immediately call for service if there is any
malfunction.
All installation changes and adjustments must be made by qualified, NABCO trained
technicians.
Overview Earlier versions of Gyro Tech GT300, GT400, GT500 and GT710 Swing Door
Operators can be retrofitted with the newer Magnum IV Control Board. This
combination offers several control features that accommodate most installations.
Some features of the Magnum IV Board include:
A. Two safety inputs: 1. A safety with a built in internal lockout
2. A continuous safety input that is always active
B. Sequential or Timer Mode operation
C. Multifunction diagnostic LED’s that indicate what the Magnum control is
doing at all times
D. Push-N-Go feature
E. Adjustable potentiometer to govern whether the door stops, creeps open or
closes when the continuous safety is activated
F. 24 VAC 0.5 Amp output for auxiliary devices
G. Close on Obstruction feature that is adjustable via a “Current Limit”
potentiometer
H. A two position slide switch that permits the installer to choose Low Energy or
Full Automatic mode of operation
I The versatility to use the Magnum IV with either a hydraulic closer with built
in braking (such as the GT-710) or a spring close mechanical closer with
no built in braking. With the latter, the Magnum IV provides the braking for
the closer via a braking module as is used with the GT300/400/500
FIGURE 1 – OVERVIEW OF MAGNUM IV & BRAKING MODULE
(BRAKING MODULE NOT USED ON GT-710)
Braking module not used on
GT-710

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Specifications:
Power Input 120 VAC (±10%) AC 50-60 Hz, 5 Amps
Available Output for Accessories 0.5 Amps 24 Volts AC
Available Wire Size for Incoming Power 14 AWG
Fuses 1 x 120 VAC 3AG fast acting & 1 x 24 VAC re-settable
Thermo-Couple Automatic cutoff of motor if overheated
Opening Hold Time Adjustable 0-60 seconds
Visual Indicators:
The Magnum IV control is equipped with two diagnostic LED’s that enable the technician to directly observe what the
Magnum control is reacting to at any instant in the door cycle. This feature compliments the use of the optional Gyro Tech
Diagnostic Daughter Board (P/N 14-10597) tool (see below) that provides visual indication of the signals the Magnum
control is receiving , at any instant in the door cycle. The Diagnostic Daughter Board can be ordered from Customer
Service. It is a valuable tool that provides a quick visual indication of signals being received by the control and is also
compatible with earlier models of Magnum controls.
These two indicators, the Magnum LEDs and the Diagnostic Daughter Board LEDs, are designed to work in tandem to
enable the technician to easily adjust the Magnum IV control or troubleshoot a problem installation. NABCO
ENTRANCES strongly recommends the use of the optional Diagnostic Daughter Board to assist the technician when
installing or servicing the Magnum IV control.
The two LED’s on the Magnum IV control are RED and GREEN.
The GREEN LED is a cycle status indicator. This LED indicates the status of the door at any instant in the door
cycle.
The RED LED is the safety status indicator. This LED indicates the state of the two safety signals or the state of
the Recycle on Obstruction (Current Limit) at any instant in the door cycle.
On the next page is a table that outlines the signals of the two LED’s.
Magnum Diagnostic
Daughter Board
PN 14-10597

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Magnum IV Diagnostic LED Function Chart
LED Color Door Status LED Status Explanation
Green
Closed Off Magnum is not activated, door is in Latch Check area
Opening Fast Flash Magnum is opening door, not yet in Back Check area
Back Check & While in Hold Open On Steady Magnum is opening door in back check
Closing Slow Flash Magnum is allowing door to close, not yet in Latch Check area
Red
Closed or Latch Check Off The swing side door mounted ACUGARD is not activated and the header
mounted Acusensor is not locking out an activation signal.
Fast Flashing The header mounted Acusensor is activated
(
* see note 1 below
)
Slow Flashing The swin
g
side door mounted ACUGARD is activated
On Steady Close on Obstruction (Current Limit) activated (LED on for 5 seconds)
Opening Off The swing side door mounted ACUGARD is not activated
Fast Flashing Not applicable
Slow Flashing The swing side door mounted ACUGARD is activated
On Steady Close on Obstruction (Current Limit) activated (LED on for 5 seconds)
Opening in Back Check Off The swin
g
side door mounted ACUGARD is not activated
Fast Flashing Not applicable
Slow Flashing The swin
g
side door mounted ACUGARD is activated
On Steady Close on Obstruction
(
Current Limit
)
activated
(
LED on for 5 seconds
)
Full Open Off The swing side door mounted ACUGARD is not activated and the header
mounted Acusensor is not activated
Fast Flashing The header mounted Acusensor is activated
(
* see note 1 below
)
Slow Flashing The swin
g
side door mounted ACUGARD is activated
On Steady Close on Obstruction
(
Current Limit
)
activated
(
LED on for 5 seconds
)
Closing While in Back Check Off The swin
g
side door mounted ACUGARD is not activated
Fast Flashing Not applicable
Slow Flashing The swing side door mounted ACUGARD is activated
On Steady Close on Obstruction (Current Limit) activated (LED on for 5 seconds)
Closing Out of Back Check Off The swing side door mounted ACUGARD is not activated
Fast Flashing Not applicable
Slow Flashing The swing side door mounted ACUGARD is activated ( * see note 2 below)
On Steady Close on Obstruction (Current Limit) activated (LED on for 5 seconds)
Note: If swing side door mounted ACUGARD is also active LED will flash slow instead.
LED will only flash slow during closing if ACUGARD it is locking out an activation signal. If no activation signal is present, LED will
not flash slow even if ACUGARD is activated.
1.
2.

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CURRENT
LIMIT MOTOR
J1
R28
MAGNUM IV
Fuse 2: 3A 120/240
DN0033
BLACK
RED
LED
TRANSFORMER
CAPACITOR
O
F F
1 2
AUX
PWR
4
J2
3
J5
AC IN
F2
SW2
SW1
F1
RELAY RELAY
J4
TDAS
SIGNAL
INPUT
TDPG
LCHK
CLOSE
Fuse 1: 0.5A 24 VAC
STOP
OPEN
BCHK
Wiring Connectors:
There are four connectors located on the control board labeled J2, J3, J4, and J5 (Figure 2). There is a re-
settable fuse 1 (F1) and a replaceable fuse 2 (F2).
J1 is the signal input. It is a six-pin connector with a mating connector installed.
1. Pin 1 - Safety with Lockout The wire to this pin is white. This is a lock out circuit so that
the signal only works when the door is in the closed or fully open position. The logic is
turned off and on through back check and door closed switches. Completing the circuit
from the common (pin 6) will prevent the door from opening or closing from a fully
closed or fully open position. It is generally used for swing side presence detectors
where the detector needs to be deactivated as the door sweeps across the detection zone.
2. Pin 2 - Door Closed Switch The wire to this pin is orange. This circuit should be
connected to the door closed switch to determine when the door is closed and out of the
detection area of the presence sensor.
3. Pin 3 - Back check Switch The wire to this pin is blue. This circuit should be connected
to the back check switch to determine when the door is in back check .
4. Pin 4 - Activation The wire to this pin is black. This circuit receives the activate signal
from the actuating device when someone approaches.
5. Pin 5 - Continuous Safety The wire to this pin is purple. This circuit is used with the
ACUGARD 2 System, swing side floor mats, or other continuous safety systems.
Completing the circuit from the common (pin 6) will stop the door during opening,
prevent activation during closing, as well as prevent it from moving if it is fully open or
closed. This safety circuit is always active unlike the safety circuit described for pin 1.
6. Pin 6 - Common The wire to this pin is red. This is the common, so connecting this red
wire to any of the other five will cause that feature to be activated. For example,
connecting the red and blue will result in back check.
J2 is the 24 VAC output to the actuating device. It is a two-pin connector.
1. This circuitry was designed to work with any sensor that operates on 24 VAC. Do not
exceed 0.5 amp current draw. A greater that 0.5 amp current will cause the onboard
re-settable fuse (F1) to trip until the situation is corrected. If a sensor requires a different
operating voltage, a separate voltage module must be used to supply power to the
sensor.
Figure 2 – Magnum IV Control
Adjustment potentiometers
Current Limit Pot.
Set this pot fully
clockwise initially
J1
J5
J2
J4
Diagnostic LED’s
Dip Switches
120 VAC fuse
24 VAC
re-settable fuse
Slide switch UP for GT-500/710
Slide switch DOWN for GT-300/400
Braking module.
Used to provide
braking on closing
cycle. Not used on
GT-710.

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J4 is the 120 VAC input connector.
J5 is the motor feed. It is a four-pin connector that connects to the motor braking module (not used with
GT-710) mounted at the end of the Magnum control board. This module uses a resistor & diode to slow the
door down if J5 is accidentally unplugged while the door is in the open position.
1. Pin 1 is motor negative. The wire to this pin is red.
2. Pin 2 is motor positive. The wire to this pin is black.
3. Matching the color wires into the motor makes the unit work for right-hand
doors. Mismatching the wires makes the unit work for left-hand doors.
4. There are no wires to the Pin 3 and 4
NOTE: If the operator is the wrong hand, it CANNOT be corrected by reversing the
wiring leads into the motor.
Fuse 1 (F1) is a 0.5 amp, fuse that protects auxiliary equipment that may be connected to J2. It also protects
the auxiliary power circuit of the magnum board.
Fuse2 (F2) is a 3 amp, 250 volt fuse that protects the circuit board from voltage spikes and incorrect voltage
being applied to the board.
Back Check – This takes place from about the last 10º of sweep to the full open position.
Closing Speed – How fast the door moves from fully open to the final 10º before fully closed.
Current Limit (or Door Block) – This sensitivity adjustments stops the activation if the door encounters an
object in the path of the moving door while opening.
Latch Check–This takes place from about the last 10º of sweep to the full closed position.
Opening Speed – How fast the door opens from fully closed to approximately 80º open.
Push-N-Go – Activation of the control by manually pushing the door.
Time Delay Activation Signal – When the door is activated via a push plate, a mat, a sensor, etc., this
option determines how long the door will stay open. It is adjustable up to 60 seconds.
Stop Adjustment – When an object is detected in the path of a moving door by a door mounted sensor
while opening and the door is not in back check, this feature determines whether the door stops, slowly
opens, or slowly closes.
FIGURE 3 - DOOR POSITIONS
Back
check
Mainspeed
Full
Open
Closed
Latch
Check
DN0035
Door Positions:

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O
F F
12 4
3
SW2
R2 R3 R4 R5 R6 R7 R8
TDAS TDPG LCHK CLOSESTOP OPEN BCHK
CURRENT
LIMIT
R28
DN0059
LED
Adjustments: There are three types of adjustments on the Magnum Control Board. These are; a slide switch,
eight potentiometers and one selector (dip) switch. See Figure 2 for the location of these adjustments.
Slide Switch - The slide switch can be used to select the appropriate mode of the Magnum IV control.
The modes available are: UPPER POSITION - Upper position is for GT500 (Low Energy Operator)
LOWER POSITION - Lower position is for GT300/400 (Standard Full
Automatic Operator).
By adjusting the slide switch , the Magnum board can control a Standard Swing full automatic operator or
Low Energy operator. Leaving the slide switch in the upper position reduces power to the motor thereby
allowing for the system to be adjusted to ANSI 156.19 Low Energy Standards. If it is desirable to increase
opening power on a GT-500 or GT-710, move the slide switch to the lower position. For the latter, final
installation must conform to ANSI 156.19.
The amount of energy stored in the door and imparted to an object on impact is determined by both the
weight and speed of the door. NABCO ENTRANCES INC. recommends setting opening and closing
speeds as slow as owners will accept, AND below the maximums stated by ANSI.
The settings on the controller will vary slightly as the voltage supplied to the unit varies due to fluctuations
in building and electrical supply loads. To allow for variations, the manufacturer recommends adding 1
second to ANSI’s minimum opening or closing times. Use a stopwatch for assistance.
Potentiometers – There are eight potentiometers located on the control board. Use a small #0 Cross point
or Phillips screw-driver to adjust each potentiometer. Don’t touch other parts of the board with the
screwdriver. This could damage the electrical circuitry. Adjust potentiometers clockwise to increase the
parameters (speeds, stops, delays, etc.), counterclockwise to decrease the parameters. Wait at least 5
seconds before testing the change. Recommended start settings correspond with positions on a clock with 12
o’clock at the top. The settings are a starting point. They are standard field approximations that might need
to be adjusted for a specific situation.
Selector (Dip) Switches – There is one bank of four switches located on the control board. The screwdriver
can be used to toggle the switches on and off. Do not use a pencil. Note that the edge of the switch bank
closest to the transformer is the “Off” position.
Customized Settings Magnum Board
Potentiometers: CAUTION! Changes should only be made by trained, qualified technicians.
Each control board has 8 potentiometers:
Stop Adjustment (STOPS)
Opening Speed Adjustment (OPEN)
Back Check Adjustment (BCHK)
Time Delay Activating Signal (TDAS)
Time Delay Push-N-Go (TDPG)
Latch Check Adjustment (LCHK)
Closing Speed Adjustment (CLOSE)
Current Limit Adjustment (CURRENT LIMIT)
FIGURE 4 –SLIDE SWITCH

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Stop Adjustment (STOP):
When an object is sensed in the path of a moving door by a swing side safety mat or
ACUGARD sensor connected to the control board through terminal # 3 (Violet wire) and
the door is not in back check, this feature determines whether the door stops, slowly
opens, or slowly closes. The recommended start setting is 12 o’clock.
Clockwise rotation of the potentiometer increases the stop power. If the stop power is
increased and an object is detected in the path of the opening door, the door will continue
to open, but at a slower speed. If the stop power is decreased and an object is detected in
the path of the opening door, the door will stop, reverse direction, and close slowly.
Rotation of the potentiometer towards the midpoint of the setting reduces the speed at
which the door moves.
NOTE: This adjustment is pertinent to signals from the Violet wire - continuous safety
input (Terminal Block #3) and is not related to current limit. Also, heavier
doors will require more STOP power.
Opening Speed Adjustment (OPEN):
This sets the door opening speed. The recommended starting position is 12 o’clock.
Clockwise rotation increases opening speed.
GT-300/400 Application : 1.5 ~ 16 sec / 80 deg.
GT-500/710 Application : 3.0 ~ 16 sec / 80 deg.
Back Check Adjustment (BCHK)
This sets back check speed. Back check takes place from about the last 10º of sweep to
the full-open position. The recommended starting position is 11 o’clock. Clockwise
rotation increases back check speed. If back check is set too high the door will slam open.
The current limit will trip. If back check is set too low the door will reach back check and
stop.
GT-300/400 Application : 0.4 ~ 10 sec / 10 deg.
GT-500/710 Application : 1.8 ~ 25 sec / 10 deg.
Time Delay Activating Signal (TDAS):
When the door is activated, this option determines how long the door will stay open after
the activation (or input signal) is released. This potentiometer is used when the door is in
Timer Mode according to dipswitch # 4 (see next page). It is adjustable up to 60 seconds.
The recommended starting position is 12 o’clock. Clockwise rotation increases time
delay.
GT300/400/500/710 Application : 1 ~ 60 sec.
Time Delay Push-N-Go (TDPG):
When the Push-N-Go feature is used, this sets the time delay, which determines how long
the door stays open. It is adjustable up to 60 seconds. The recommended starting position
is 12 o’clock. Clockwise rotation increases time delay. Set dipswitch # 4 to “ON” (see
next page)
GT300/400/500/710 Application : 1 ~ 60 sec.
Note: Push-N-Go time delay, when active, should be set for a shorter length of time
than the Time Delay Activating Signal.
If TDPG is not used, the time delay adjustment must be set at the same setting as time
delay activating signal (TDAS). Do not set TDPG at minimum (full counter clockwise).
Note: There is a difference as to how Push-N-Go functions on the GT-500 versus the
GT300/400 & GT710. Because the GT-500 uses a clutch gear, Push-N-Go activation of
GT-500 can only take place from a fully closed position and only once the door is
manually pushed out of latch position. If Push-N-Go is desirable at any point in the door
travel, order the GT-500 with a “clutchless” operator.

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Latch Check Adjustment (LCHK):
This sets latch check speed. Latch check takes place from about the last 10º of sweep to
the full-close position. The recommended starting position is 11 o’clock. Clockwise
rotation increases latch check speed. If latch check is set too high the door will slam
closed.
GT-300/400/500/710 Application : 1.5 ~ 5.0 sec / 10 deg.
Closing Speed Adjustment (CLOSE):
This sets the door closing speed. The recommended starting position is 12 o’clock.
Clockwise rotation increases closing speed.
GT-300/400/500/710 Application : 3.0 ~ 12 sec / 80 deg.
Current Limit Adjustment (Current Limit):
Adjustment of this potentiometer from the fully clockwise position should be only be done
after all other adjustments are made and door operation is satisfactory.
In the case of GT-500 or GT-710, to satisfy ANSI Low Energy standard, it will be
required to set this pot carefully. Although recommended setting is around 1:00 o’clock, it
will be necessary to adjust setting depending upon door weight and speed.
Current Limit stops activation and cuts power to the motor if the motor current exceeds
the setting. It is used to set how much force the opening door will push on an encountered
object before it recycles. When the recycle is triggered, the door will stop and coast to a
close. Reactivation will not be possible for 5 seconds. This adjustment is affected by
opening speed. Set opening speed first. The recommended starting position for current
limit might not be appropriate in windy conditions. For example, strong wind gusts
against an exterior door may inadvertently cause it to recycle. Clockwise rotation makes
the door less sensitive to objects in its path.
Dip Switches: Switch 1 – Not Used.
Switch 2 – Not Used.
Switch 3
1. On - Push-N-Go Inactive When the switch is ON, Push-N-Go is not active.
2. OFF - Push-N-Go Active When the switch is OFF, Push-N-Go is activated.
If Push-N-Go is active, switch # 4 below should be set
to ON otherwise the door will go open when pushed
and stay open, a second activation will be needed for
the door to close.
Switch 4
1. On- Timer Mode When the switch is ON, the door will open, time out
and close.
2. OFF - Sequential Mode When the switch is OFF, the door is in the sequential
mode. One activation opens the door, a second
activation is needed for the door to close.
FIGURE 5 - DIPSWITCHES
1
2
3
4
OFF
Switches
Shown in
"ON" Position

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Symptom Action/Cause Solution
Operator does not function 1. Check Fuse 2 (F2).
2. Check for 120 VAC at
connector J5
3. Check power to activation
device at connector J1.
4. Check Fuse 1 (F1)
1. Replace fuse
2. Check incoming power. If power is good, check
connection to motor. Replace motor if necessary
3. If power exceeds 0.5 amps at 24 VAC, replace with
lower draw sensor. If blown, replace fuse.
4. If F1 is OK, check power to activating devices at J2.
Voltage is too low, reduce accessory load
Adjustment of Hydraulic
Closer has no effect. (GT-
710 only)
Check 4 pin motor connector
on the board For GT-710’s only: Pin #2 and #4 must be jumped by a wire
Door slams closed 1. GT-710: Main speed on
hydraulic closer not adjusted
properly
2. GT300/400/500: Closing
speed not adjusted or motor
circuit open
1. Turn main speed in direction of turtle
2. Adjust closing speed on Magnum control 2. check for
open connection on motor circuit
Door slams open 1. All units: Back check speed
not adjusted
2. GT-710: magnet not in
proper location
3. GT-300/400/500: Operator
not preloaded correctly
1. Adjust back check speed on hydraulic closer or Magnum
control
2. Adjust back check potentiometer or relocate magnet
3. Pre-load operator by correctly installing arm on operator
spindle as per hardware installation manual
Fuse 2 (F2) blows when
door open is triggered Check door activation device power consumption If power draw exceeds 0.5 amps at 24 VAC, replace with lower draw sensor
Motor spins when
activated but door does not
open
1. GT-500: Check polarity of
motor input wires at connector
on motor
2. All units: motor/operator
coupling or spyder coupling
loose between motor and
operator
1. Reverse motor leads on motor
2. Remove and separate motor and operator. Inspect
couplings for looseness
Back check adjustment on
Magnum board has no
effect
1. GT-710: The fully open door
position is greater than 90º and
the back check adjustment on
the hydraulic closer is
overriding the controls of the
Magnum board
2. All units: Door is not going
into back check even though it
is reaching 90 degrees
1. Adjust the back check screw on the bottom of the header
out one turn
2. Reposition magnet on GT-710 or correctly pre-load arm
on GT-300/400/500 as per hardware installation manual
No back check 1. GT-710: Magnets on main
sprocket not in correct position.
2. GT-300/400/500: back check
switch not closing at correct
position
1. Follow instructions in GT-710 hardware installation
manual to properly align magnets.
2. Follow instructions in GT-GT300/400/500 hardware
installation manual to properly pre-load operator
Door does not stay tightly
closed 1. All units: Preload on swing
arm is not correct
2. GT-710: Spring adjustment
not correct on LCN closer.
3. GT-710: Building stack
pressure is excessive
1. Position arm as shown in hardware installation manual
2. Adjust spring tension on LCN closer as per GT-710
hardware installation manual.
3. Upgrade operator unit to GT 500
Troubleshooting:

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Presence Sensor does not
function 1. All units: No power to sensor or defective sensor.
2. All units: Sensor not
connected to White wire
1. Check harness wiring as per applicable section
2. Connect the output of the sensor to the Red # 5 and
White # 4 connections on the terminal block.
Swing Side Presence
Sensor is activated by
opening or closing door
All units: Connection of sensor
to wiring harness was to
“Safety” not “Safety w/
Lockout”
Rewire Safety Sensor to “Safety w/Lockout” connector.
(pins Red # 5 and White # 4 connections on the terminal
block.)
Swing Side ACUGARD
2, swing side floor mat,
safety holding beams or
other accessories do not
function while door is
moving
All units: Connection of
accessories was made to
“Safety w/Lockout” not
“Continuous Safety”
Rewire accessory to “Continuous Safety” connection (Red
# 5 and Violet # 3 connections on the terminal block.)
Sensor shows activation
signal sent, but door does
not open
All units: Sensor not
connected properly to
activation connector
Check harness wiring as per applicable section
One sensor does not
activate both doors on a
simultaneous pair
All units: Sensor is not
connected to both control
boards
Install simultaneous pair harness (P/N 229953)
Swing Side Door sensor
does not function
1. All units: No power to
sensor or defective sensor.
2. All units: Sensor not
connected to Violet wire
1. Check harness wiring as per applicable section.
2. Connect the output of the sensor to the Red # 5 and
Violet # 3 connections on the terminal block
Troubleshooting continued ….

Magnum IV Control Manual for Gyro Tech Swing Door Systems
Page 14 www.NabcoEntrances.com 1/4/06
This section details the installation and adjustments of the Magnum IV control in a GT-300, GT-400 and GT-500 swing
door unit.
Step 1: Install all components as per the applicable hardware installation manual.
Step 2: Connect all wiring and harnesses as per the following wiring information as it pertains to wiring and adjustments
for GT-300, GT-400 and GT-500 Operators.
Back Check and Latch Micro Switches:
The operators used with the GT-300, GT-400 and GT-500’s provide the necessary latch check and back
check limit switches the Magnum IV control requires for correct operation. These switches are mounted
on the top of the operator assembly as illustrated in the diagram below. Note position of cams on right
hand versus left hand operator.
Section A
Wiring and Adjustment for GT-300,
GT-400 and GT-500 Operators
FIGURE 6 - LIMIT SWITCH CONFIGURATION
Black
Brown
Red
Blue
Green
White
Latch-check
Limit switch
Breakout
Limit switch
Back-check
Limit switch
Left Hand Operator shown
In DOOR CLOSED posit ion
RightHand Operator shown
In DOOR CLOSED position
Black
Brown
White
Red
Green
Blue
Back-check
Limit switch
Breakout
Limit switch
Latch-check
Limit switch
DN0051

Magnum IV Control Manual for Gyro Tech Swing Door Systems
Page 15 www.NabcoEntrances.com 1/4/06
Required Wiring Harnesses:
The following harnesses are necessary to complete the installation (see below):
a. Power Harness, Magnum Board
Part # 21-9933 (for single door)
14-5883 for Simultaneous Pair door)
b. Main Harness Assy, Magnum Board
Part#22-10065 (for single door)
22-10270 (for Simultaneous Pair door)
c. Magnum Board Harness for 300/400/500
Part # 21-9934
FIGURE 7 - WIRING HARNESSES FOR MAGNUM IV
Power Harness - Single
P/N 21-9933
Power Harness - Sim.Pair
P/N 14-5883
Micro Switch - Short Arm
P/N 14-3867
DN0046
Main Harness - Sim. Pair
P/N 22-10270
Main Harness - Single
P/N 22-10065
Magnum IV & Chassis Assembly
P/N 12-10292 300/400/500 Harness, Magnum
P/N 21-9934
1

Magnum IV Control Manual for Gyro Tech Swing Door Systems
Page 16 www.NabcoEntrances.com 1/4/06
Wiring for Rocker switch:
Rocker Switch (part # 10-3528) is available. Connect the red wire to activation input, the white wire
to 24VAC common and the black wire to activation signal of sensing device.
Wiring for Break – out:
When the unit has a Break-out feature, the panic breakout circuit must be connected to shut
down the system when the door is broken out in the opposite direct. Please refer to the
following procedure.
a. A Panic Latch kit must be installed
When installing the panic latch, flip the direction of the panic latch so that the
“←EXT” arrow points to Interior side of the building. This makes the switch close
instead of opening when the door is broken out. The contacts of the switch
would be changed to Normally Open from Normally Closed. See Figure 8 below.
b. Cut the connectors from the Brown and Black wires on the Magnum micro switch
harness as shown below. Connect the Brown and Black wires to" Continuous Safety”
input of Terminal Block between Terminal Block #3 violet and #5 red) as shown
inFigure#9.
c. Also cut the connectors off the Panic Latch harness and connect these wires to
“Continuous Safety” input of Terminal Block. (Between Terminal Block #3 violet
and #5 red). Refer to the Figure # 10 below for complete wiring information.
FIGURE 8
PANIC LATCH
FIGURE 9
MICRO SWITCH HARNESS
FIGURE 10
BREAKOUT CIRCUIT WIRING
DIAGRAM
EXTInterior
Side Exterior Side
DN0060
Black
Black Brown
Brown
DN0061
USE THESE CONNECTIONS ON INSWING
DOORS WITH PANIC BREAKOUT
DN0049
Panic Latch must be flipped.
Arrow marked "EXT" must
point into the building.
(Contacts must close when
door is broken out)
Back Check Limit Switch
Harness Assy
(Black and Brown)
Breakout Limit Switch: N.O.
Terminal Block # 3 & # 5
MUST be connected to Continuous Safety input,
Breakout Limit Switch Signal and Panic Latch Signal
When the unit has Panic Breakout feature,
Panic Latch Kit
Part # 11- 0941
Red
Red
Brown
Black
Red: Comm, Blue: N.C.
for Magnum Board
300/400/500 Harness
Part # 21-9934
2
3
4
F F
O
Selector Switches
ON
OFF
1
BROWN
BLACK
RED
WHITE
VIOLET
ORANGE
Motor
J5
Pwr
Aux
J4
R40R29R27R24R21R13R8
CLOSELCHKTDPGTDASBCHKOPENSTOP
J2
J3
Relay
LIMIT
CURRENT
R23
Relay
Transformer
Magnum IV control
Operator Assembly

Magnum IV Control Manual for Gyro Tech Swing Door Systems
Page 17 www.NabcoEntrances.com 1/4/06
Figure 11 - General Wiring - Single Diagram
Off
HoldOpen
On
Off
White
Common N.O.
Device
Not Used
Typical
Mat or
Wall Switch
24 VAC
Input
Typical Sensor
Device
If Rocker Switch is not Required Connect the Activation Signals to Terminal Block #6 Directly
Part # 10-3528
RS-12 Rocker Switch
Red Red
Part # 11- 0941
Panic Latch Kit
When the unit has Panic Breakout feature, Breakout Limit Switch Signal and/or Panic Latch Signal MUST be connected to Continuous Safety input, Terminal Block #3 &#5
Breakout Limit Switch: N.O. (Black and Brown)
Latch Check Limit Switch
Part # 22-10065 Harness Assy
for Single
Back Check Limit Switch
Ter
#5
Note:
Common connection
# 5 (Red) not shown
for simplicity
to Terminal
#5 (red) to Terminal
#5 (red) to Terminal
#5 (red)
to Terminal
#5 (red)
to Terminal #5 (red)
Panic Latch must be flipped.
arrow marked "EXT" points into the building.
(Contacts must close when door is broken out)
to Terminal
#5 (red)
Black
Red
Activation Safety with Lockout
during door swing Continuous Safety
24 VAC AUX Output
for sensors
TERMINAL BLOCK
#1 BROWN #2 ORANGE #3 VIOLET #4 WHITE #5 RED #6 BLACK
24VAC NEUTRAL 24VAC HOT CONTINUOUS SAFETY SAFETY WITH LOCKOUT 24VAC COMMON ACTIVATION
Grounded
Black(Hot) Black
Black
White (Neutral)
Green
115VAC 5A
Part # 21-9934 300/400/500 Harness for Magnum Board
Red: Comm, Blue: N.C.
White: Comm, Green: N.C.
Black
Brown
DN0047
123456

Magnum IV Control Manual for Gyro Tech Swing Door Systems
Page 18 www.NabcoEntrances.com 1/4/06
Figure 12 - General Wiring – Simultaneous Pair
DN0048
Panic Latch must be flipped.
arrow marked "EXT" points into
the building.
(Contacts must close when door is broken out)
2
White
Activation Safety with Lockout
during door swing Continuous Safety
24 VAC AUX Output
for sensors
13456
Ter
#5
to Terminal #5 (red)
to Terminal
#5 (red)
to Terminal
#5 (red) to Terminal
#5 (red)
to Terminal
#5 (red) to Terminal
#5 (red)
to Terminal
#5 (red)
to Terminal
#5 (red) Panic Latch must be flipped.
arrow marked "EXT" points into
the building. (Contacts must
close when door is broken out)
Note:
Common connection #5 (Red)
not shown for simplicity
Off
Hold Open
On
Off
Part # 10-3528
RS-12 Rocker Switch
Black
Red
Brown
Black
Black
Black
White Black
Green
Grounded
Black
White (Neutral)
Black (Hot)
Red: Comm, Blue: N.C.
Brown
Part # 21-9934 300/400/500 Harness for Magnum Board
IF ROCKER SWITCH IS NOT REQUIRED, CONNECT THE ACTIVATION SIGNALS TO TERMINAL BLOCK #6 DIRECTLY.
Red Red
Installer to provide utility power
115VAC 6A
Part # 21-9934 300/400/500 Harness for Magnum Board
White: Comm, Green: N.C.
Latch Check Limit Switch
Black
Green
When the unit has Panic Breakout feature, Breakout Limit Switch Signals and Panic Latch Signals MUST be connected to Continuous Safety input, Terminal Block #3 & #5
Breakout Limit Switch: N.O. (Black and Brown)
Back Check Limit Switch
Not Used
24 VAC
Input
Common
Typical
Mat or
Wall Switch
Device
Typical Sensor
Device
N.O.
TERMINAL BLOCK
#1 BROWN #2 ORANGE #3 VIOLET #4 WHITE #5 RED #6 BLACK
24VAC NEUTRAL 24VAC HOT CONTINUOUS SAFETY SAFETY WITH LOCKOUT 24VAC COMMON
ACTIVATION
Part # 22-10270 Harness Assy for Sim Pair
Black
Part # 11- 0941 Panic Latch Kit
Red

Magnum IV Control Manual for Gyro Tech Swing Door Systems
Page 19 www.NabcoEntrances.com 1/4/06
Table 1 – Comparison of Magnum IV to the Analog Controller
Magnum IV Board Analog Controller
Adjustable opening speed via potentiometer Three position adjustment on opening speed.
Adjustable closing speed via potentiometer Adjustment by changing resistors
Adjustable Back-check speed via potentiometer Three position speed adjustment
Adjustable Latch-check speed via potentiometer Three position speed adjustment
Adjustable current limit/door block trip. No adjustment.
Adjustable activation timer (0 to 60 seconds) Requires separate time delay module
Adjustable separate Push-N-Go timer (0 to 60
seconds) No adjustment.
Adjustable door action when detection (continuous
safety) occurs – allow door to stop, creep open or
creep closed. No adjustment.
Automatic shut-off of motor if door does not open
within 15 seconds. N/A
Separate connections provided for swing side mats
and swing side presence detector (Continuous safety
and safety with lockout). Only one connection provided
Enable/disable sequential operation via dip switch. N/A
Enable/disable Push-N-Go via dip switch. Requires separate module
Visual onboard LED status indicators Not Available
This section offers instructions on how to upgrade an existing GT300/400/500 installation with the Magnum IV and related
hardware.
Tools required: Phillips Screwdriver, #0 (for potentiometers),
#2 Slotted Screwdrivers, Small and Medium
9/16” socket and ratchet
Section B
Retrofit Kit Manual
Model 300/400/500 Swing Door System
With Magnum IV Control

Magnum IV Control Manual for Gyro Tech Swing Door Systems
Page 20 www.NabcoEntrances.com 1/4/06
Hard Ware Kit List:
This kit has been shipped with the following installation hardware.
-01 11-10293-01 Magnum Board Retrofit Kit for Single Swinger
-02 11-10293-02 Magnum Board Retrofit Kit for Simultaneous Pair Swinger
Part # Part Description Qty Notes
-01
Single
-02
Sim-
Pair
1 12-10292 Magnum IV Board & Chassis Assembly 1 2 With Braking Module
2 22-10065 Main Harness - Single 1 --- With Terminal Block
3 22-10270 Main Harness – Simultaneous Pair --- 1 With Terminal Block
4 21-9934 300/400/500 Harness, Magnum Board 1 2
5 21-9933 Power Harness - Single 1 ---
6 14-5883 Power Harness – Simultaneous Pair --- 1
7 14-3867 Micro switch – Short Arm 1 2
8 15-10682 Magnum IV Control
Wiring & Adjustment Manual for Gyro Tech
Swing Door Operators
1 1
9 24-3258-01 Screw, Micro switch 2 4
10 24-0017-19 Washer, Micro switch 2 4
FIGURE 13
MAGNUM CONTROL
AND HARNESSES
Power Harness - Single
P/N 21-9933
Power Harness - Sim.Pair
P/N 14-5883
Micro Switch - Short Arm
P/N 14-3867
DN0046
Main Harness - Sim. Pair
P/N 22-10270
Main Harness - Single
P/N 22-10065
Magnum IV & Chassis Assembly
P/N 12-10292 300/400/500 Harness, Magnum
P/N 21-9934
1