Owner's manual

3
E SR-750-IM
Power supply to the SR-750 Series
There are 2 methods for connecting a power source to the SR-750 Series.
• Connect the power supply wire of the control cable to a 24 V DC power
supply device.
• Connect to a PoE (Power over Ethernet) power supply device using the
Ethernet port.
Use only one of the above methods to connect to the power source.
Wiring when supplying 24 V to the control cable
Connection when supplying power from a PoE device
Use the Ethernet cable for the SR-750 Series for connection. Connect the
RJ-45 connector of the Ethernet cable to a device (switching hub, etc.)
compatible with the PoE power supply feature.
Connecting the Control Cable and Wiring
 Control cable connection method
1 Align the notch of the cable connector with the marking position
next to the control port.
2 Tighten the connector screw by turning clockwise. Set the screw
tightening torque to 1.5 - 2.0 N•m
 Control cable color and function
The following describes the color code and function of the control cable.
Solder the lead wire to the connector using the wire attached to the
device to be connected.
 Connecting the FG wire
Be sure to provide Class D ground for the FG wire.
 IN1/IN2 wire connection
• The IN1 (timing) input is the input that causes the SR-750 Series to start
reading (allow the illuminating light source to emit light).
• The IN2 (preset) input is the input that causes the SR-750 Series to
register preset data.
The IN1/IN2 input is implemented through induced voltage input.
• Input rating : 15 - 26.4 V DC
• Repetitive peak off-state current : 0.2 mA
Make sure to use only one of the connection methods for power supply.
If power is supplied both from the control cable and PoE power supply
device at the same time, the unit may be damaged.
• Use a steady power supply voltage of 24 V DC ±10%.
• Do not use a power supply other than 24 V DC. Otherwise, it may cause
failure.
• Before connecting or disconnecting cables, make sure to turn off power to
the equipment connected to the SR-750 Series.
Otherwise, it may cause failure of the SR-750 Series.
Be sure to connect with a PoE power supply device compliant with
IEEE802.3af.
NOTICE
+
Brown
Blue
+24V
0V
DC24V±10%
NOTICE
SR-750 Series HUB compatible with PoE
power supply
Ethernet cable for the
SR-750 Series
NOTICE
POWER
Align the notch with the
marking position.
Insert the connector straight so that it is not tilted, then securely tighten it.
Under-tightening can lead to loose connector due to vibrations, resulting in
poor contact.
Insufficient tightening may not meet the requirements of the protective
structure.
* After tightening it by hand, retighten it approximately 90° - 120° using a
tool such as pliers.
Do not repeatedly bend the root of the connector of control cable. Loose
connection may result.
Wire color Symbol Description Signal direction AWGsize
Brown 24 V
+24 Vpower
supply
Input 26
Blue 0 V
Power supply
GND
—26
Orange RXD
RS-232C
Receive
Input 28
Yellow TXD RS-232C Send Output 28
Purple SGND RS-232CGND — 28
Green IN1 IN1 Input Input 26
Gray IN2 IN2 Input Input 28
White and
blue
INCOM
Input common
mode voltage
—28
Pink OUT1 OUT1 Output Output 28
Aqua blue OUT2 OUT2 Output Output 28
White OUT3 OUT3 Output Output 28
Black OUTCOM
Output common
mode voltage
—28
Black tube FG FG — —
Be sure to turn power off before attempting to connect or disconnect the
control cable.
The FG wire of the control cable and the shield wire of the Ethernet cable are
electrically connected via the main unit case. Provide them with a common
ground.
NOTICE
NOTICE
Black tubeFG
NOTICE
+
Contact or non-contact
IN1 (Green)
IN2 (Gray)
Photocoupler isolation
Internal circuit
INCOM
(White and blue)
10kΩ
5.6kΩ