186
Remote Terminals
Section 5-1
Communications mode
SRT1-RO
@@@
: High-speed Communications Mode
SRT2-RO
@@@
: High-speed Communications Mode or
Long-distance Communications Mode
Power supply type
Local power supply
Communications power
supply voltage (including I/
O power supply)
20.4 to 26.4 V DC (24 V DC
+10%
/
–15%
)
(Power cannot be supplied from the communications
cable)
Current consumption
Internal circuits: 350 mA max. at 24 V DC
(Including relay coil current)
Noise immunity
±
1.5 kVp-p with a pulse width of 0.1 to 1
µ
s and a rise
time of 1 ns (via impulse noise simulator)
Common terminal current
(COM 0, 1, and 2 through
7)
3 A max.
Vibration resistance
10 to 55 Hz, 1.0-mm double amplitude
Shock resistance
Malfunction: 100 m/s
2
Dielectric strength
500 V AC (between insulated circuits)
2,000 V AC (between all output terminals and the power
supply or between all communications terminals and all
different-polarity contacts)
Insulation resistance
20 M
Ω
min. at 250 V DC
(at the same locations as dielectric strength specs.)
Ambient temperature
Operating: 0 to 55
°
C (with no icing or condensation)
Storage: –20 to 65
°
C (with no icing or condensation)
Ambient humidity
Operating: 35% to 85% (with no condensation)
Storage: 25% to 85% (with no condensation)
Operating environment
No corrosive gases
Mounting method
M4 screws or 35-mm DIN track mounting
Mounting strength
50 N
Track direction: 10 N • m
Terminal strength
Pulling: 50 N
Tightening: 0.6 to 1.18 N • m
Node number settings
The node number is set on a DIP switch. (Set the node
number before turning ON the Slave.)
Weight
SRT
@
-ROC08: 145 g max.
SRT
@
-ROF08: 145 g max.
SRT
@
-ROC16: 240 g max.
SRT
@
-ROF16: 240 g max.
Item
Specification