Mitsubishi FR - S500 Measuring Point, Rh, Rm, Rl, Mrs, Res-Sd, Measuring Remarks Instrument, 5VDC

Item	Measuring Point
Frequency setting	Across 10 (+)-5
power supply
	Across FM (+)-SD
Frequency meter
signal
	Across AM (+)-5
Start signal	Across STF, STR,
	RH, RM, RL, MRS,
Select signal
	RES-SD
Alarm signal	Across A-C
	Across B-C

Measuring					Remarks
Instrument		(Reference Measured Value)
	5VDC						"5"is	common.
	Approximately 5VDC at
	maximum frequency
	(without frequency meter)
Moving-coil type					T1		is common.
(Meter, etc. may be
			8VDC
used)
(Internal resistance:
					T2
50kΩ or larger)							SD
	Pulse width T1:
			Adjusted with C1
	Pulse cycle T2:
			Set with Pr. 55 (Pr,56)
	Approximately 5VDC at						is5	common.
	maximum frequency
	(without frequency meter)
Moving-coil type							isSD	common.
(Meter, etc. may be	20 to 30VDC when open.
used)	ON voltage: 1V or less
(Internal resistance:	SD is common.
50kΩ or larger)
	Continuity check
				<Normal>		<Fault>
Moving-coil type	Across Discontinuity					Continuity
(such as a meter)	A-C:
	Across Continuity					Discontinuity
	B-C:

CAUTION

1.Use FFT to measure the output voltage accurately. It can not be measured accurately with a meter or general instrumentation.

2.When the carrier frequency exceeds 5kHz, do not use the instrument because overcurrent losses occurring in the metallic parts inside the instrument will increase and may lead to burnout.

In this case, use an approximate effective value type instrument.

159