Fuji Electric ZSS-7, Instruction Manual

Page: 35 / 116

- 28 -
INZ-TN7ZSS-E
4.11.2 When an optional optical axis adjusting tool (laser
pointer) is not used
(1) Connect the digital voltmeter using the BNC receptor cable, referring to “4.6 Checking received light
quantity”.
(2) The reference light quantity is based on the output in zero calibration or voltage value of light quantity
which is described in a nameplate.
When the quantity of light is completely zero V, move the transmitter box from side to side and up and
down slowly to find the position where the received light quantity increases. If you cannot still confirm
the quantity of light, loosen the fixing bolts and nuts further, and check reaction of the digital voltmeter
while moving the box back and forth slowly.
(3) If you find reaction of light quantity increases, fasten the fixing bolts and nuts temporally, and perform
the operation in 2). (*4)
(4) If output is not as much as that measured at the time of calibration even if output is at its maximum on
the transmitter side, fix the box at the maximum output angle temporality and adjust the light axis,
moving the box on the receiver side similarly. When you can confirm the output at the time of adjusting
any of the boxes, do not loosen the fixing bolts and nuts too much, or the light axis can deflect further.
Do not loosen more than one bolt or loosen fixing bolt and nut widely in both cases of adjustment.
Light axis may deflect again.
(5) Move the transmitter unit and the receiver unit from side to side and up and down to adjust until the
voltage value of light quantity of digital multimeter becomes smaller in all directions.
(6) Retighten all volts to fix them (If the light quantity decreases at retightening, adjust again).
*4) Received light quantity might not increase to its maximum that was confirmed by “4.6 Checking re-
ceived light quantity” due to the influences from dust and moisture in the stack unit, etc.