Honeywell VM1AL0N User Manual
12.Reattach the cover with the screws.
13.Connect the DC/DC power supply to the vehicle’s electrical system as directed below:
Caution: For installation by trained service personnel only.
•VIN+ is connected to battery positive
•VIN- must be connected to battery negative
•GND must be connected to the vehicle chassis ground
Caution: For installation by trained service personnel only.
•VIN+ is connected to battery positive
•VIN- must be connected to battery negative
•GND is connected to the vehicle chassis ground, which can also be battery negative
14.While observing the VX6/VX7 Adapter Cable connect the power cable as close as possible to the actual battery terminals of the vehicle. When available, always connect to unswitched terminals in the vehicle fuse panel, after providing proper fusing.
Caution: For uninterrupted power, electrical supply connections should not be made at any point after the ignition switch of the vehicle.
15.Use proper electrical and mechanical fastening means for terminating the cable. Properly sized “crimp” type electrical terminals are an accepted method of termination. Select electrical connectors sized for use with 18AWG (1mm2) conductors.
16.Provide mechanical support for the cable by securing it to the vehicle structure at approximately one foot intervals, taking care not to over tighten and pinch conductors or penetrate the outer cable jacket.
17.Connect the watertight connector end of the power cable to the dock power connector by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely. Flip the power switch on the back of the dock to On.
18.Secure the power cable to the computer using the Strain Relief Cable Clamps.
19.Place Thor VM1A in the Dock.
20.If using the Screen Blanking feature, install the screen blanking box or switch.
21.Press the Power Switch on the back of the dock.
22.Press the Power Button on the front to turn on the computer.
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Thor VM1A Vehicle-Mounted Computer |
Once installation is complete, remember to start the computer and configure the Auto-On Behavior.
See the Auto-On control panel.
Note: Ignition control is not available for trucks over 60VDC.
Wiring Diagram for 50-150VDC Power Supply, Screws on Side of Lid
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Forklift Battery |
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Main Switch |
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+Vo |
-Vo |
User supplied serial |
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cable for optional |
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screen blanking |
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Fuse - See |
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connection, |
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see below |
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Warning |
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statement below |
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See Caution |
GND |
VIN+ |
VIN- |
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statement |
Red/White (if present) |
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below |
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VO+ |
Red |
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Black/White (if present) |
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VO- |
Black |
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Green |
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DC/DC |
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Supply |
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Quick Mount
Smart Dock
COM1 or COM2 Connector
on Dock
Circular
Power Connector on Dock
Caution: For battery powered vehicles:
•GND must be connected to the vehicle chassis ground.
Caution: For internal combustion engine powered vehicles:
•GND is connected to the vehicle chassis ground, which can also be battery negative.
Warning: For proper and safe installation, follow the Fuse Requirements 50150VDC Power Supply, Screws on Side of Lid.
Thor VM1A Vehicle-Mounted Computer |
93 |
60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Top of Lid)
Caution: These instructions are for use with VM1D Standard Dock and VM3D Enhanced Dock only.
This option requires DC/DC power supply Honeywell Part no. VX89303PWRSPLY shown below.
Shown with Lid Attached
Lid is secured with screws on the side of lid.
Shown with Lid Removed
Input and output connector blocks under lid.
Two positive (+), negative (-), and ground ( 
) connection per terminal block.
If the DC/DC power supply does not have screws in the top of the lid, see 60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Side of Lid).
Caution: For installation by trained service personnel only.
Caution: Usage in areas where moisture can affect the power supply connections should be avoided. The power supply should be mounted in a dry location within the vehicle or placed in a suitable protective enclosure.
Caution: Use caution when routing the power cable. See 12-48 VDC Vehicles (10-60 VDC Direct Connection).
94 |
Thor VM1A Vehicle-Mounted Computer |
Fuse Requirements for 50-150 VDC Power Supply, Screws on Top of Lid
Warning: For proper and safe installation, the input power cable must be connected to a fused circuit on the vehicle. If the supply connection is made directly to the battery, the fuse should be installed in the positive leadwithin 5 inches ofthe battery’s positive (+) terminal. Use VM3055FUSE (or equivalent) to install the fuse as shown below:
For all voltages, use the 3A fuse from the kit or a slow blow fuse that has a DC voltage rating greater than the vehicle input voltage.
Note: For North America, a UL Listed fuse is to be used.
Power Cable Identification for 50-150 VDC Power Supply, Screws on Top of Lid
The DC power cable is included with the dock and is one of the two styles below:
Power cable with right angle connector and 6 wires:
Caution: Twist the red and red/white wires together and twist the black and black/white wires together before connecting to vehicle power.
Wire Color |
Connection |
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Red |
DC + (10-60 VDC) |
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Red/White |
DC + (10-60 VDC) |
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Black |
DC - |
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Black/White |
DC - |
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Green |
Ground |
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Blue |
Ignition Input (optional) |
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Power cable with straight connector and 4 wires:
Thor VM1A Vehicle-Mounted Computer |
95 |
Wire Color |
Connection |
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Red |
DC + (10-60 VDC) |
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Black |
DC - |
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Green |
Ground |
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Blue |
Ignition Input (optional) |
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Note: Correct electrical polarity is required for safe and proper installation. See the Wiring Diagram for 50-150VDC Power Supply, Screws on Side of Lid for additional wire color-coding specifics.
The Thor VM1A DC input wires (Red, Red/White DC+ and Black, Black/White DC-) and the Blue ignition input wire are galvanically isolated. The Green ground input is used for electrostatic discharge (ESD) protection.
Vehicle 50-150 VDC Power Connection
1.Please review the Wiring Diagram for 50-150 VDC Power Supply, Screws on Top of Lid, before beginning power cable install.
2.The Thor VM1A must not be mounted in the dock. The power switch on the dock must be turned Off. The power cable must be UNPLUGGED from the dock.
3.Route the cable from the computer to the DC/DC power supply. Route the power cable the shortest way possible. The cable is rated for a maximum temperature of 105°C (221°F). When routing this cable, it should be protected from physical damage and from surfaces that might exceed this temperature. Do not expose the cable to chemicals or oil that may cause the wiring insulation to deteriorate. Always route the cable so that it does not interfere with safe operation and maintenance of the vehicle.
4.Cut the cable to length and strip the wire ends.
5.Remove the lid from the DC/DC power supply.
6.Connect the stripped end of the positive wires (red and red/white twisted together or a single red wire) to the output block. See Power Cable Identification for 50-150 VDC Power Supply, Screws on Top of Lid.
7.Connect the stripped end of the negative wires (black and black/white twisted together or a single black wire) to the output. See Power Cable Identification for 50-150 VDC Power Supply, Screws on Top of Lid.
Note: The input and output blocks each have two + (positive), two – (negative) and two 
(ground) connectors. Either connector in the block can be used to connect the matching polarity wire.
96 |
Thor VM1A Vehicle-Mounted Computer |
8.Route the wiring from the DC/DC power supply to the vehicle’s electrical system. Do not connect to vehicle power at this time.
9.Strip the wire ends and connect to the input side of the DC/DC power supply.
10.Use looms and wire ties to secure all wiring as shown.
11.Reattach the cover with the screws.
12.Connect the DC/DC power supply to the vehicle’s electrical system as directed below:
Caution: For battery powered vehicles:
•VIN+ is connected to battery positive
•VIN- must be connected to battery negative
•GND must be connected to the vehicle chassis ground
Caution: For internal combustion engine powered vehicles:
•VIN+ is connected to battery positive
•VIN- must be connected to battery negative
•GND must be connected to the vehicle chassis ground
13.While observing the Fuse Requirements, connect the power cable as close as possible to the actual battery terminals of the vehicle. When available, always connect to unswitched terminals in the vehicle fuse panel, after providing proper fusing.
Caution: For uninterrupted power, electrical supply connections should not be made at any point after the ignition switch of the vehicle.
14.Use proper electrical and mechanical fastening means for terminating the cable. Properly sized “crimp” type electrical terminals are an accepted method
Thor VM1A Vehicle-Mounted Computer |
97 |
of termination. Select electrical connectors sized for use with 18AWG (1mm2) conductors.
15.Provide mechanical support for the cable by securing it to the vehicle structure at approximately one foot intervals, taking care not to over tighten and pinch conductors or penetrate the outer cable jacket.
16.Connect the watertight connector end of the power cable to the dock power connector by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely. Flip the power switch on the back of the dock to On.
17.Secure the power cable to the computer using the Strain Relief Cable Clamps.
18.Place Thor VM1A in the Dock.
19.If using the Screen Blanking feature, install the screen blanking box or switch.
20.Press the Power Switch on the back of the dock.
21.Press the Power Button on the front to turn on the computer.
Once installation is complete, remember to start the computer and configure the Auto-On Behavior.
See the Auto-On control panel.
Note: Ignition control is not available for trucks over 60VDC.
Wiring Diagram for 50-150 VDC Power Supply, Screws on Top of Lid
Existing Circuitry on Vehicle
Quick Mount
Smart Dock
Forklift Battery
Main Switch
User supplied serial
+Vo -Vo cable for optional COM1 or COM2 screen blanking
Fuse - See
connection,
Connector
Warning
see below
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statement below |
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See Caution |
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statement below |
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+ |
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- |
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Red/White (if present) |
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+ |
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Red |
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Black/White (if present) |
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Black |
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Power |
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- |
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Connector |
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Green |
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DC/DC |
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Blue |
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Power |
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(not connected) |
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Supply |
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Caution: For battery powered vehicles:
98 |
Thor VM1A Vehicle-Mounted Computer |
•GND must be connected to the vehicle chassis ground.
Caution: For internal combustion engine powered vehicles:
• GND is connected to the vehicle chassis ground, which can also be battery negative.
Warning: For proper and safe installation, follow the Fuse Requirements for 50-150 VDC Power Supply, Screws on Top of Lid.
VX6/VX7 Adapter Cable
Caution: These instructions are for use with VM1D Standard Dock and VM3D Enhanced Dock only.
An adapter cable is available to attach the Thor VM1A to a vehicle previously equipped with a VX6/VX7 DC power cable. The adapter cable has a 5-pin connector to match with the VX6/VX7 power supply cable on one end and a 6-pin connector to match to the VM1A on the other end. This section assumes the VX6/VX7 power cable is properly connected to vehicle power. Refer to the VX6 or VX7 Vehicle Mounting Reference Guide for details.
Warning: Because the VX6/VX7 supports 10-60 VDC power input, verify input voltages before using this adapter cable with an existing VX6 or VX7 power connection installation.
To Power Connector on Dock
To VX6/VX7 Power Supply Cable
When this adapter cable is used, there is no provision for an ignition switch input. Therefore the vehicle ignition monitoring function is not available when using this cable.
Connect to VX6/VX7 Power Cable
1.Connect the adapter cable to the VM1A power cable by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely.
2.The cable is rated for a maximum temperature of 105°C (221°F). Therefore, routing this cable, it should be protected from physical damage and from surfaces that might exceed this temperature. Cable should be protected from physical damage from moving parts. Do not expose the cable to chemicals or oil that may cause the wiring insulation to deteriorate. Always route the cable so that it does not interfere with safe operation and maintenance of the vehicle.
Thor VM1A Vehicle-Mounted Computer |
99 |
3.Provide mechanical support for the cable by securing it to the vehicle structure at approximately one foot intervals, taking care not to over tighten and pinch conductors or penetrate outer cable jacket.
4.Connect the watertight connector end of the power cable to the dock power connector by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely.
5.Secure the power cable to the computer using the Strain Relief Cable Clamps.
6.Place Thor VM1A in the Dock
7.If using the Screen Blanking feature, install the screen blanking box or switch.
8.Press the Power Switch on the back of the dock.
9.Press the Power Button on the front to turn on the computer.
Thor VX8/Thor VX9 Adapter Cable
Caution: These instructions are for use with VM1D Standard Dock and VM3D Enhanced Dock only. This cable is not used for the VMXD Enhanced Dock.
An adapter cable is available to attach the Thor VM1A to a vehicle previously equipped with a VX8/VX9 DC power cable. The adapter cable has a 6-pin connector to match the VX8/VX9 power supply cable on one end and a 6-pin connector to match the VM1A on the other end. The cable also has bare wires for ground and ignition sense connection plus a D9 cable to connect to a COM port on the dock to provide a screen blanking signal. This section assumes the VX8/VX9 power cable is properly connected to vehicle power. Refer to the VX8 or VX9 Vehicle Mounting Reference Guide for details.
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To COM port |
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on Dock |
To VX8/VX9 |
To Power Connector |
Power Cable |
on Dock |
To Ground and |
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Ignition Sense |
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Connect to Thor VX8/VX9 Power Cable
1.Connect the adapter cable to the Thor VX8/VX9 power cable by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely.
2.Connect the green wire to vehicle ground.
Caution: For battery powered vehicles:
100 |
Thor VM1A Vehicle-Mounted Computer |
•GND (green wire) must be connected to the vehicle chassis ground.
Caution: For internal combustion engine powered vehicles:
•GND (green wire) is connected to the vehicle chassis ground, which can also be battery negative.
3.If ignition control will be used, connect the blue wire to an ignition switched circuit (less than 1mA over input voltage range). If ignition control is not used, the blue wire can be left disconnected,
4.If the VX8/VX9 cable is connected to a screen blanking box or switch, connect the D9 connector to a COM port on the dock.
5.The cable is rated for a maximum temperature of 105°C (221°F). Therefore, when routing this cable, it should be protected from physical damage and from surfaces that might exceed this temperature. Cable should be protected from physical damage from moving parts. Do not expose the cable to chemicals or oil that may cause the wiring insulation to deteriorate. Always route the cable so that it does not interfere with safe operation and maintenance of the vehicle.
6.Provide mechanical support for the cable by securing it to the vehicle structure at approximately one foot intervals, taking care not to over tighten and pinch conductors or penetrate outer cable jacket.
7.Connect the watertight connector end of the power cable to the dock power connector by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely.
8.Secure the power cable to the computer using the Strain Relief Cable Clamps.
9.Place Thor VM1A in the Dock.
10.If using the Screen Blanking feature, install the screen blanking box or switch if not previously installed.
11.Press the Power Switch on the back of the dock.
12.Press the Power Button on the front to turn on the computer.
CV61 Adapter Cable
Caution: These instructions are for use with VM1D Standard Dock and VM3D Enhanced Dock only.
An adapter cable is available to attach the Thor VM1A to a vehicle previously equipped with a CV61 DC power cable. The adapter cable has a 5-pin connector to match with the CV61 power supply cable on one end and a 6-pin connector to match to the VM1A on the other end. This section assumes the CV61 power cable is properly connected to vehicle power. Refer to the CV61 documentation for details.
Thor VM1A Vehicle-Mounted Computer |
101 |
To Power Connector on Dock
To CV41 Power Supply Cable
When this adapter cable is used, there is no provision for an ignition switch input. Therefore the vehicle ignition monitoring function is not available when using this cable.
Connect to CV61 Power Cable
1.Connect the adapter cable to the CV61 power cable by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely.
2.The cable is rated for a maximum temperature of 105°C (221°F). Therefore, routing this cable, it should be protected from physical damage and from surfaces that might exceed this temperature. Cable should be protected from physical damage from moving parts. Do not expose the cable to chemicals or oil that may cause the wiring insulation to deteriorate. Always route the cable so that it does not interfere with safe operation and maintenance of the vehicle.
3.Provide mechanical support for the cable by securing it to the vehicle structure at approximately one foot intervals, taking care not to over tighten and pinch conductors or penetrate outer cable jacket.
4.Connect the watertight connector end of the power cable to the dock power connector by aligning the connector pins to the power connector; push down on the watertight connector and twist it to fasten securely.
5.Secure the power cable to the computer using the Strain Relief Cable Clamps.
6.Place Thor VM1A in the Dock
7.If using the Screen Blanking feature, install the screen blanking box or switch.
8.Press the Power Switch on the back of the dock.
9.Press the Power Button on the front to turn on the computer.
Screen Blanking
Screen blanking (blackout) can be enabled when the vehicle is in motion. Once screen blanking is enabled, the display is blanked out (or a preselected zoom area is displayed) any time when the cable sends the signal that the vehicle is in motion. If the cable is removed, screen blanking is disabled and the display remains on.
Prerequisite: The steps outlined in either 12-48 VDC Vehicles (10-60 VDC Direct Connection), 60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Side of Lid) or 60-144 VDC Vehicles (50-150 VDC Power Supply, Screws on Top of Lid) have been completed.
102 |
Thor VM1A Vehicle-Mounted Computer |
Screen blanking is accomplished by either a Screen Blanking Box or a user supplied switch.
Caution: For installation by trained service personnel only.
Fuse Requirements for Screen Blanking
Warning: For proper and safe installation, the input power lead to the Screen Blanking Box requires a 3 Amp maximum time delay (slow blow) high interrupting rating fuse.
Note: For North America, a UL Listed fuse is to be used.
Screen Blanking Cable
Refer to Screen Blanking to configure the VM1A for screen blanking.
When routing any additional cables for screen blanking:
•Route the cable the shortest way possible removing any left-over cable
•Fuses and cabling are user supplied. Therefore, route these cables so they are protected from physical damage and from surfaces that might exceed the cable's rated temperature threshold.
•Cable should be protected from physical damage from moving parts
•Do not expose the cable to chemicals or oil that may cause the wiring insulation to deteriorate
•Always route the cable so that it does not interfere with safe operation and maintenance of the vehicle.
•Provide mechanical support for the cable by securing it to the vehicle structure at approximately one foot intervals, taking care not to over tighten and pinch conductors or penetrate outer cable jacket.
Honeywell Screen Blanking Box Cable
An optional Honeywell Screen Blanking Box Cable is available.
Thor VM1A Vehicle-Mounted Computer |
103 |
DB9 |
Function with Screen Blanking Box |
Wire color |
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Female |
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1 |
-6, 9 |
Not Used |
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7 |
(RTS) |
Connected to Screen Blanking Box, unswitched |
Black (see note) |
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side |
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8 |
(CTS) |
Connected to Screen Blanking Box, switched |
Gray (see note) |
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Note: Wire colors only apply to optional Honeywell Screen Blanking Box Cable, VM1080CABLE. Wire colors may vary in a user-supplied cable.
The optional Honeywell Screen Blanking Box Cable, VM1080CABLE, is installed as follows:
1.Connect the gray wire of the cable to the switched side of the Screen Blanking Box.
2.Connect the black wire of the cable to the unswitched side of the Screen Blanking Box.
3.Connect the D9 serial connector to either COM1 or COM2 serial port on the dock.
User-Supplied Cable for Screen Blanking
A user-supplied cable can be used as well. Pins 7 and 8 must be connected as detailed below. No other pins are to be connected.
PIN 5 |
PIN 1 |
PIN 8 PIN 7
DB9 |
Function with Screen Blanking Box |
Function with Switch |
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Female |
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1 |
-6, 9 |
Not Used |
Not Used |
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7 |
(RTS) |
Connected to Screen Blanking Box, unswitched |
Connected to Switch |
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side |
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8 |
(CTS) |
Connected to Screen Blanking Box, switched side |
Connected to Switch |
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The user-supplied cable is installed as follows:
104 |
Thor VM1A Vehicle-Mounted Computer |
1.Connect the wire from Pin 8 of the cable to the switched side of the Screen Blanking Box or to a user-supplied switch.
2.Connect the wire from Pin 7 of the cable to the unswitched side of the Screen Blanking Box or to a user-supplied switch.
3.Connect the D9 serial connector to either COM1 or COM2 serial port on the dock.
Screen Blanking Box
Screen Blanking |
Connection |
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Box Terminal |
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12-xxV |
Input from vehicle motion sensing circuitry. |
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Please refer to label on Screen Blanking Box for allowable voltage input |
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range. |
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GND |
DC - |
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These two terminals are for connecting a serial cable: |
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• If using an optional Honeywell screen blanking cable, VM1080CABLE, |
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connect the gray wire to the switched side of the connection and connect |
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Unswitched Switched |
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the black wire to the unswitched side. |
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• If using a user-supplied cable, the cable must be constructed so that Pin |
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7 (RTS) connects to switched side of the connection and Pin 8 (CTS) |
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connects to the unswitched side. |
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It is assumed that the motion sensing circuitry in the illustrations below is powered by internal vehicle circuitry.
Please refer to the appropriate illustration below for Screen Blanking Box wiring diagrams.
Warning: Do not exceed the maximum input voltage, either 60 or 72VDC, specified on the Screen Blanking Box label when using this configuration.
Thor VM1A Vehicle-Mounted Computer |
105 |
MOTION
CIRCUITRY
+Vi |
GND |
3A fuse
To -Vo on vehicle, i.e. Negative 
battery terminal
To pin 7 of COM1 or COM2
To pin 8 of COM1 or COM2
Note: The black and gray wire colors in the illustration only apply to the optional Honeywell Screen Blanking Box Cable, VM1080CABLE. The wire colors may be different in a user-supplied cable.
Screen Blanking with Switch
In applications where it is impractical to use the screen blanking box due to vehicle voltage or lack of a motion sensing signal, screen blanking can be controlled via a user supplied switch or relay that provides an electrical conductive connection on vehicle motion.
To pins 7 and 8 of COM1 or COM2 port on dock
Pins 7 and 8 must be connected as shown in the illustration above. No other pins are to be connected.
106 |
Thor VM1A Vehicle-Mounted Computer |
VMXD Enhanced Dock with Thor VX8/Thor VX9 Power Cable
Caution: This dock is recommended for use when replacing an existing Thor VX8 or Thor VX9 where screen blanking is used. This dock eliminates the need for wiring changes by enabling the existing VX8/VX9 power cable and screen blanking box to be used when the VX8/VX9 is replaced by Thor VM1A These instructions are for this doc model only! The Ignition Control feature is not available when this dock is used.
Warning: The external DC/DC converter previously used with the Thor VX8 or Thor VX9 must be left in place to provide ground isolations. Connecting the dock power input directly to vehicle power could result in a safety hazard or equipment damage.
Warning: The cable shielding must be connected to chassis ground. Consult the instructions later in this section for the respective power supply type.
Caution: COM1 is used for screen blanking (via the power cable connector) and is unavailable when the screen blanking box is attached. When a screen blanking box is attached, any external serial device, such as a scanner, must be connected to the COM2 port on the dock. If a screen blanking box is not connected via the power cable, the COM1 port on the dock is available for a serial device connection.
Caution: These instructions for use with VMXD Enhanced Dock only.
Determine the type of power supply used with the previous Thor VX8 or Thor VX9 installation:
•DC/DC Power Supply with Screws on Top of Lid
•DC/DC Power Supply with Screws on Side of Lid
Thor VM1A Vehicle-Mounted Computer |
107 |
DC/DC Power Supply with Screws on Top of Lid
Caution: Inspect the cable shield to verify it is connected to chassis ground. If there is no connection from the cable shield to chassis ground, one must be added at this time. Use a jumper wire to connect the cable shield to chassis ground as shown below for the appropriate type of power supply installed on the vehicle. A jumper wire, as shown in the illustrations below, may be present to attach the chassis ground to the white wire of the power cable. This wire is not necessary but can be left in place if present. For proper screen blanking, verify the yellow and green wires are attached to the screen blanking box as shown in the illustrations below.
For this model, follow the diagram below to attach the power cable shield to chassis ground:
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Existing Circuitry on Vehicle |
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Forklift Battery |
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MOTION |
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CIRCUITRY |
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Main Switch |
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GND |
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+Vi |
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+Vo |
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-Vo |
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VMX004VMCRADLE |
10A slow fuse |
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3A fuse |
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Vehicle Mount |
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Close to power |
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Smart Dock |
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Green |
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6
Yellow Circular Power
Connector
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1 |
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Brown |
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White |
DC/DC
Power
Supplied Power Cable
Supply
(Shielding to be trimmed)
Caution: For battery powered vehicles:
•VIN+ is connected to battery positive.
•VIN- must be connected to battery negative.
108 |
Thor VM1A Vehicle-Mounted Computer |
•GND must be connected to the vehicle chassis ground.
Caution: For internal combustion engine powered vehicles:
•VIN+ is connected to battery positive.
•VIN- is connected to battery negative.
•GND is connected to the vehicle chassis ground, which can also be battery negative.
DC/DC Power Supply with Screws on Side of Lid
Caution: Inspect the cable shield to verify it is connected to chassis ground. If there is no connection from the cable shield to chassis ground, one must be added at this time. Use a jumper wire to connect the cable shield to chassis ground as shown below for the appropriate type of power supply installed on the vehicle. A jumper wire, as shown in the illustrations below, may be present to attach the chassis ground to the white wire of the power cable. This wire is not necessary but can be left in place if present. For proper screen blanking, verify the yellow and green wires are attached to the screen blanking box as shown in the illustrations below.
Thor VM1A Vehicle-Mounted Computer |
109 |
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