Byte 24: Maintenance Required; Byte 25: Out Of Specification 1; Byte 26: Out Of Specification 2 - AUMA AUMATIC AC 01.2 Manual

Actuator controls
AC 01.2/ACExC 01.2 Modbus RTU
Table 16: Byte 24: Maintenance required
Bit Designation
(process representation)
0 Bit: Maintenance mechan-
ics
1 Bit: Maintenance seals
2 Bit: Maintenance lubricant
3 Bit: Maintenance contact-
ors
4 Bit: Maintenance interval
5 —
6 —
7 —
Table 17: Byte 25: Out of specification 1
Bit Designation
(process representation)
0 —
1 —
2 —
3 —
4 Bit: Torque warn. CLOSE
5 Bit: Torque warn. OPEN
1)
6 Bit: SIL fault
7 Bit: No reaction
1) The safety function indications via fieldbus are for information only and must not be used as part of a safety function. The I/O signals of
the SIL module must be used for this purpose.
Table 18: Byte 26: Out of specification 2
Bit Designation
(process representation)
0 Bit: Wrn controls temp
1 —
2 —
3 Bit: 24 V DC, external
4 —
5 Bit: RTC button cell
Value Description
1 Mechanic maintenance requirement
0 No signal
1 Seal maintenance requirement
0 No signal
1 Lubricant maintenance requirement
0 No signal
1 Contactor maintenance requirement
0 No signal
1 The set maintenance interval has expired.
0 No signal
No signal (reserved)
No signal (reserved)
No signal (reserved)

Byte 25: Out of specification 1

Causes of the Out of specification signal in accordance with NAMUR recommendation
NE 107.
Value Description
No signal (reserved)
No signal (reserved)
No signal (reserved)
No signal (reserved)
1 Warning: Limit value for torque warning in direction CLOSE exceeded.
0 No signal
1 Warning: Limit value for torque warning in direction OPEN exceeded.
0 No signal
1 Warning: A SIL fault of the SIL sub-assembly has occurred.
0 No signal
1 Warning: No actuator reaction to operation commands within the set reaction time.
0 No signal

Byte 26: Out of specification 2

Value Description
1 Warning: Temperature within controls housing too high
0 No signal
No signal (reserved)
No signal (reserved)
1 The external 24 V AC voltage supply of the controls has exceeded the power supply
limits.
0 No signal
No signal (reserved)
1 Warning: The voltage of the RTC button cell is too low.
0 No signal
Description of the data interface
21