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4.2.2 Selection of output terminals [
0.1:
b ]
1)
Selection of output terminals RCH{UL) and LOW (LL)
Function
I
Setting
on G.tb
1
o
LL and .UL (for lower limit and uppper limit frequency signals)
I
1
LOW and UL (for low speed and upper limit frequency signals)
2
LL and RCH (for low frequency and speed reach signals)
3
LOW and RCH (for low speed and speed reach signa,ls)
• For details of the setting procedure for selecting output terminals RCH and LOW via the
operating panel, refer to Section 3.1.1 (page
22).
Select function number 8 for the
terminal selection operation.
2)
When a pre-designated frequency has been reached during a run, signals are output at
terminals RCH (UL) and LOW (LL) of the inverter's control circuit terminal block to indicate
that the frequency has been reached.
These signals are provided as open-collector
outputs (at a maximum of· 24Vdc and 50mAdc each).
The control end of the inverter uses these signals as 24Vdc input, either to a relay or to
a programmable controller.
Example inverter terminal-to-relay connections for a speed reach signal are shown in Figure 4.
2, while Figure 4.3 shows reach signal's connections fro an inverter-to- programmable control-
ler arrangement.
[F3ecommended relay:]
Mode MY1 manufactured by OMROM Co., with an operating coil rated at 24Vdc.
To protect your equipment, mount a surge suppresser (200V-1A) across each relay coil.
P24
RCH
(uLl
@
LOW
(LL)
Figure 4.2
Example inverter-to-relay connections for reach signal detection
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