Page top

K3SC

Interface Converter

K3SC

A compact converter that allows communications between RS-232C/USB and RS-422/485 devices. Ideal for industrial applications.

Ratings

Item K3SC-10 100 to 240 VAC K3SC-10 24 VAC/VDC
Supply voltage 100 to 240 VAC 50/60 Hz 24 VAC 50/60 Hz, 24 VDC
Operating voltage range 85% to 110% of power supply voltage
Power consumption 5 VA max. 3 VA max./3 W max.
Master/slave device communications format
(Select one of the formats listed on the right
using the DIP switch.)
Master Device ↔ Slave Device
RS-232C or USB ↔ RS-485, half duplex
RS-232C or USB ↔ RS-422, full duplex
USB ↔ RS-232C, full duplex
Communications method Start-stop synchronization
Ambient operating temperature RS-232C -10 to 55 °C (with no icing)
USB 0 to 55 °C (with no icing)
Ambient operating humidity 25% to 85% (with no condensation)
Ambient storage temperature -20 to 65 °C

Characteristics

Item Specification
Master
device
RS-232C
interface
(See
note 1.)
Maximum transmis-
sion distance
15 m
Maximum number of
connectable Units
1 Unit
USB
interface
(See
note 2.)
Maximum transmis-
sion distance
5 m; hub delay time + cable delay time ≤ 70 ns
Maximum number of
connectable Units
1 Unit
USB standard V1.1
Slave
device
RS-485
interface
Maximum transmis-
sion distance
500 m
Maximum number of
connectable Units
31 Units (for multi-drop connection)
RS-422
interface
Maximum transmis-
sion distance
500 m
Maximum number of
connectable Units
1 Unit
Baud rate 1,200/2,400/4,800/9,600/19,200/38,400 (bps)
Default setting: 9,600
Data length 7/8 bits
Default setting: 7
Stop bit length 1/2 bits
Default setting: 2
Communications parity None/even/odd
Default setting: Even
Echoback selection Echoback: With/without
Default setting: Without
Selection switch response delay Approx. 30 ms
Insulation resistance 20 MΩ min. measured at 500 VDC between the following:
External terminals ↔ casing
RS-232C terminals and USB port ↔ RS-422/485 terminals ↔ power supply terminals
Isolation
method
Commu-
nications
Phototransistor coupler
Power
supply
Isolating transformer
Dielectric strength 1,500 VAC for 1 minute measured between the following:
External terminals ↔ casing
RS-232C terminals, USB port, RS-422 terminals, and RS-485 terminals ↔ power
supply terminals
500 VAC for 1 minute measured between the following:
RS-232C terminals and USB port ↔ RS-422 terminals and RS-485 terminals
Noise immunity AC power supply terminals, normal/common mode: ±1,500 V
AC/DC power supply terminals, normal mode: ±480 V; common mode: ±1,500 V
Square wave with 1-ns rising edge ±1 μs, ±100 ns
Vibration
resistance
Malfunction 10 to 55 Hz, 0.5-mm single amplitude for 10 minutes each in X, Y, and Z directions
Destruction 10 to 55 Hz, 0.75-mm single amplitude for 2 hours each in X, Y, and Z directions
Shock resistance Malfunction 98 m/s2 3 times each in X, Y, and Z directions
Destruction 294 m/s2 3 times each in X, Y, and Z directions
Weight Approx. 150 g
Degree of protection
(See note 3.)
Front panel
operation parts
Conforms to IEC standards, equivalent to IP20 (when terminal cover mounted)
Terminals Equivalent to VDE 0106/100 (when terminal cover mounted)
EMC (EMI) EN61326-1 Industrial electromagnetic environment
Emission Enclosure: CISPR 11 Group 1 class A: CISRP16-1/-2
Emission AC Mains: CISPR 11 Group 1 class A: CISRP16-1/-2
(EMS) EN61326-1 Industrial electromagnetic environment
Immunity ESD: EN61000-4-2: 4 kV contact discharge (level 2), 8 kV air discharge
(level 3)
Immunity RF-interference: EN61000-4-3: 10 V/m (amplitude-modulated, 80 MHz to
1 GHz) (level 3)
Immunity Fast Transient Noise: EN61000-4-4: 2 kV (power line) (level 3)
Immunity Burst Noise: 1 kV line to line (I/O signal line)
Immunity Surge: EN61000-4-5: 1 kV line to line, 2 kV line to ground (power line)
Immunity Conducted Disturbance EN61000-4-6: 3 V (0.15 to 80 MHz) (level 2)
Immunity Voltage Dip/Interrupting EN61000-4-11: 0.5 cycles, 0, 180°, 100% (rated
voltage)
Approved standards UL508, Conforms to EN61326-1, EN61010-1 (IEC61010-1)
Memory protection No protective functions (Communications data is not protected for power interruptions
during communications.)

Note: 1. With RS-232C communications, free-run mode is supported for SD and RD but not for any other signal lines.
           2. To use USB communications, the USB driver for the K3SC must be downloaded from the OMRON web site.
                  http://www.fa.omron.co.jp/
           3. The enclosure ratings do not apply when USB is used.
           4. The CE marking does not apply when the K3SC is used for USB.