Commissioning
EL5101, EL5101-0010, EL5101-0011
134
Version: 4.2
• The
overflow
bit (
0x60n0:05 [
}
142]
) is set if an overflow FF...→ 00... occurs. It is reset if 1/3 of the
counter range is exceeded.
Open circuit detection
• A separate open circuit detection can be activated for each of the channels A, B and C (index
0x80n0:0B [
}
139]
,
0x80n0:0C [
}
139]
,
0x80n0:0D [
}
139]
).
• Open circuit detection is activated for channels A and B by default.
• A differential voltage of typically -1.5 V >Vid > +1.5 V (EL5101) and in the range of typically -0.475 V >
Vid > +0.475 V (EL5101-001x) is detected as an open circuit.
• If an open circuit is detected, it is indicated as process data
open circuit
= TRUE. The bit in object
0x60n0:07 [
}
142]
is set. An open circuit is indicated separately in indices
0xA0n0:01 [
}
143]
(track A),
0xA0n0:02 [
}
143]
(track B) and
0xA0n0:03 [
}
143]
(track C).
• TxPDO state also becomes TRUE if an open circuit is detected, since invalid data have to be assumed.
Micro-increments (only EL5101-0000)
• Works with and without distributed clocks, but in the EL5101 this is only meaningful in conjunction with
one of the DC modes
• By setting the counter value only the integer component can be modified.
• The principle:
Fig. 157: Frequency measurement principle in enhanced operation mode
Summary of Contents for EL5101
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