Laserscale BL57-003NE Series, Инструкция по эксплуатации

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5-2
(E)
BL57-NE
•
0 V is the circuit ground, and it is not connected to the frame ground.
• Ensure that the power supply voltage at the input connector of the interface unit is 5 VDC +10 % in the
−
5
case of output format A, or 5 VDC
±
5% in the case of output formats F, G and H.
•
+
5 V S and 0 V S are for checking the voltage (remote sensing function) applied to the input connector of
the interface unit. These voltages can be used to check and control for drops in the supply voltage due to
the cables. When using a power supply that cannot control power supply fluctuations, a power supply
input terminal can be used to reduce the supply voltage drops occurring due to the cable length. In this
case, connect the cable to the respective
+
5 V (power supply) or 0 V.
∗
Connect the controller’s power supply ground to the power supply ground of the power supply unit to
place then at the same potential.
• The appropriate cable thickness is AWG28 to AWG24.
• Connect all of the 0 V terminals to prevent mis-wiring.
•
Use shielded cables for all cabling. Connect the shield to the connector shell.
• Use twisted-pair cables for the output signals.
Use cables so that the following signals are paired:
A and
∗
A, B and
∗
B,
+
SIN and
−
SIN,
+
COS and
−
COS, ALM and
∗
ALM, REF and
∗
REF.
•
For output format A, F or G, SIN (M) and COS (M) are dedicated signals for checking the scale signal
level. Never connect them to a device other than the oscilloscope. Also, use 0 V (M) for the GND.