Mitsubishi Electric FR-S500 Instruction Manual page 15

Control circuit
Symbol Terminal Name
A
B Alarm output
C
Inverter
RUN
running
Open collector
SE
common
FM For meter
RS-485
——
connector
(*3)
*1. Do not connect terminals SD and PC each other or to the earth (ground).
For sink logic (factory setting), terminal SD acts as the common terminal of contact input.
For source logic, terminal PC acts as the common terminal of contact input. (Refer to the
separately available instruction manual (detailed) for switching method.)
*2. Low indicates that the open collector output transistor is on (conducts). High indicates
that the transistor is off (does not conduct).
*3. For details of RS-485 communication, refer to the separately available instruction manual
(detailed).
*4. RL, RM, RH, RT, AU, STOP, MRS, OH, REX, JOG, RES, X14, X16, (STR) signal
selection
*5. RUN, SU, OL, FU, RY, Y12, Y13, FDN, FUP, RL, Y93, Y95, LF, ABC signal selection
*6. To be compliant with the European Directive (Low Voltage Directive), the operating
capacity of relay outputs (A, B, C) should be 30VDC 0.3A.
*7. Terminals SD, SE and 5 are isolated from each other. Do not earth (ground).
1 contact output which indicates that
the protective function of the inverter is
activated to stop output. 230VAC 0.3A,
30VDC 0.3A. Alarm: discontinuity
across B-C (continuity across A-C),
Normal: continuity across B-C
(discontinuity across A-C).(*6)
Switched low when the inverter output
frequency is equal to or higher than the
starting frequency (factory set to 0.5Hz
variable). Switched high during stop or
DC injection brake operation. (*2)
Permissible load 24VDC 0.1A
Common terminal for inverter running terminal RUN. (*7)
The output signal across terminals FM-SD is factory set to about
1mA at 60Hz and is proportional to the corresponding output
frequency. Since output voltage is pulse shape, a digital meter
can be connected.
Frequency permissible load current 1mA
Pulse specification 1440 pulses/s at 60Hz
Using the parameter unit connection cable (FR-CB201 to
205), the parameter unit (FR-PU04) can be connected.
Communication operation can be performed using RS-485.
10
Definition
Output terminal
function selection
(Pr.64, Pr.65)
changes the
terminal functions.
(*5)