Maintenance Indicators

Rate of Wear Counter

The contacts must be inspected each time the counter reaches a hundred mark. The message Not available or circuit breaker type not defined is displayed if the characteristics of the circuit breaker have not been defined. In this case, see Breaker selection in the MicroLogic setup menu on the MicroLogic HMI, in registers 9846–9853.

Address	Register	RW	X	Unit	Type	Range	A/E/P	Description
0x2385	9094	R	1	%	INT16U	0–32767	P	Phase 1 contact wear indicator ⁽¹⁾
0x2386	9095	R	1	%	INT16U	0–32767	P	Phase 2 contact wear indicator ⁽¹⁾
0x2387	9096	R	1	%	INT16U	0–32767	P	Phase 3 contact wear indicator ⁽¹⁾
0x2388	9097	R	1	%	INT16U	0–32767	P	Neutral contact wear indicator ⁽¹⁾
(1) Factory setting = 0x8000.

Load Profile Counters

The load profile counters (only available with the BCM ULP module) report the number of hours for each range of current in the MicroLogic trip unit. If the load profile counters reach the maximum value 4 294 967 295 and a new load profile event occurs, then the load profile counters are reset to 0.

A read request of eight registers is necessary to read the load profile counters.

Address	Register	RW	X	Unit	Type	Range	A/E/P	Description
0x74B7–0x74B8	29880–29881	R	1	Hour	INT32U	0–4 294 967 295	A/E/P	Number of hours for 0–49% of the nominal current range
0x74B9–0x74BA	29882–29883	R	1	Hour	INT32U	0–4 294 967 295	A/E/P	Number of hours for 50–79% of the nominal current range
0x74BB–0x74BC	29884–29885	R	1	Hour	INT32U	0–4 294 967 295	A/E/P	Number of hours for 80–89% of the nominal current range
0x74BD–0x74BE	29886–29887	R	1	Hour	INT32U	0–4 294 967 295	A/E/P	Number of hours for 90–100% of the nominal current range