TGM133/134 Instruction Manual May 2013 4th Edition 3/24
Installation precautions
When installing this unit, care should be given to the following points to
prevent noise and electromagnetic wave interference from other equipment.
1. Do not pass lead and connection cables through the same ducts as
power lines.
2. Be sure to install the unit at least 0.5 m or more away from high voltage
or large current sources or high-power relays.
Installation place precautions
1. Mount the scale as closely as possible to the work-piece or to the object
being measured. Further the scale is mounted, greater is measuring error.
2. The scale unit should be used within an ambient temperature range of 0
to 50°C. Avoid locations where the scale is exposed to direct sunlight and
heat sources such as motors.
3. Do not place anything on the mounted scale, or step on it: excessive
force to the scale causes trouble.
Before installation
Do not disassemble parts other than scanning unit holder. All electrical
adjustments have also been completed before shipment. So do not tamper any
additional adjustment at time of its installation.
This scale unit consists of precision mechanism parts and electromagnetic
parts. Therefore, applying excessive pressure to the unit can seriously harm
the performance and service life of the scale. Be careful not to apply
excessive pressure to the scale unit when proceeding with the work.
When the unit is to be carried, support the scale unit and reading head
altogether. Do not hold the unit by the head cable, connectors, etc.
Ensure that the scale unit housing and reading head as well as the circuit
breaker for the supply power are properly grounded.
Standard procedure for EMC compliance.
When equipment such as controller does not function properly due to the effects
of large noise from power line please provide ground lines at one point
intensively. Power source which has a remote sensing function, must be used for
TGM133. Power unit without remote sensing unit may fail to prove optimum
functions. Please provide proper power source by referring to Section 5.
