SHIMPO FGV-H-series - Manual (Page 3)

Overload Overload Overload Overload Overload
Even though each model is able to withstand an overload
of 200% of its rated capacity, caution should be exercised
that this does not happen very often otherwise the sensor
will be damaged. To protect the gauge and/or the sample
under test when a motorized stand or some other motor-
ized device is used in conjunction with the gauge, two
overload output OC NPN transistors are available to be
used to disconnect power when the overload condition
reaches 120% of the gauge's rated capacity. One transis-
tor is for tension and the other for compression. See
diagram below (Fig 2).
Fig. 2
RS232C P RS232C P RS232C P RS232C P RS232C Port ort ort ort ort
The most important feature of the FGV family of gauges is
perhaps the availability of the RS232C communications
port. Data and commands can be linked to a PC or any
other device responding to RS232C signals for storage or
further analysis. All activity is taking place through the
connector shown in Fig. 3. Table 1 below shows the pins
involved with all activity that is taking place through
connector HR12-10RC-10SDL shown in Fig. 3.
RS232C Output Specifications
Baud rate: 2400 bps
Data length: 8 bits
Parity: none
Stop bit: one
Logic level: ±10 V
PIN# DESCRIPTION
1 Analog signal output
2 Analog GND
3 Receive data (input)
4 Digital GND
5 Communication enable
6 Transmit data (output)
7 No connection
8 Compression overload output
9 Tension overload output
10 Frame GND
Fig. 3
(HR12-10RC-10SDL), HIROSE
Analog Output Analog Output Analog Output Analog Output Analog Output
An analog output signal is available for recording purposes.
The amplitude of this signal is ± 1 VDC. The voltage is
positive when compression testing is performed and
negative for tension.
Signal characteristics:
Amplitude: ± 1 VDC
Generated by: 12-bit D/A converter
Signal update: 140 times/sec
Load impedance: 10 K
Ω
minimum
Connector pins: Pin #1 signal output (analog)
Pin #2 GND (analog)
(see Fig.3 & Table 1)
Comment: When the zero switch is pressed to tare the
gauge the analog output goes to 0V automatically.
Table 1
Connections Connections Connections Connections Connections
FGV output RS232C connector
connector pin# on PC (D-sub 25pin)
3 (RxD) 2 (TxD)
6 (TxD) 3 (RxD)
4 (GND) 7 (GND)
5 (Enable) 4 (RTS)
5 (CTS)