·Some details are not shown. Please refer to specification sheets for all information.

SML

Single Loop Controller Series

REMOTE I/O MODULE
(for NestBus use)

Functions & Features
• Remote I/O module for the NestBus use
• Plugin hardware
• Twisted-pair cable transmission
• Removable terminal block
• Self-diagnostics
• Monitor LED provided for contact I/O modules

MODEL: SML–[1]-[2][3]

ORDERING INFORMATION
• Code number: SML-[1]-[2][3]
Specify a code from below for each of [1] through [3].
  (e.g. SML-A4-K)

[1] I/O SECTION
A4: Di 8 points
C7: Do 8 points (photo MOSFET relay)
C8: Do 8 points (relay)
E5: Di 4 + Do 4 points (relay)
G3: Ai 8 points
G4: Ai 4 points
M4: Ao 4 points
P4: Pi 4 points
R2: Ai 2 points (isolated between chs)
+ Ao 2 points (isolated between chs, current output)
(power input code K, L not selectable)
R3: Ai 4 + Ao 4 points
S5: Ai 4 + Di 4 points
S6: Ao 4 + Do 4 points (relay)

[2] POWER INPUT
AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V, 47 – 66 Hz)
(Selectable only for SML-R2)
K: 85 – 132 V AC (Operational voltage range 85 – 132 V, 50 – 60 Hz)
L: 170 – 264 V AC (Operational voltage range 170 – 264 V, 50 - 60 Hz)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[3] OPTIONS
Lowpass Filter
(only for SML-P4)
blank: Without
/LF: With

RELATED PRODUCTS
• Loop configuration builder software (model:  SFEW3E)
Builder software downloadable at M-System’s web site.
A dedicated cable is required to connect the module to the PC. Please refer to the users manual for the Builder software for applicable cable types.

GENERAL SPECIFICATIONS
Construction: Plug-in
Connection
  I/O signal, Power input: M3.5 screw terminals (torque 0.8 N·m)
  NestBus, RUN contact output: Euro type connector terminal
Applicable wire size: 0.2 to 2.5 mm2, stripped length 7 mm
Screw terminal: Chromated steel
Housing material: Flame-resistant resin (black)
Isolation:
 I/O selection codes other than R2: NestBus to I/O to RUN contact output to power to FG
 R2: NestBus to input 1 to input 2 to output 1 to output 2 to RUN contact output to power to FG
Power indicator: Red LED turns on when power is supplied.
RUN indicator: Red LED turns on when data are transmitted to the NestBus.
RUN Output: Contact opens in an abnormality.
Rating: 100 V AC @ 0.5A (cos ø = 1)
30 V DC @ 0.5 A (resistive load)
Maximum switching voltage: 250 V AC or 220 V DC
Maximum switching power: 62.5 VA or 60 W
Minimum load: 10 mV DC @ 1 mA
Mechanical life: 5 x 107 cycles

NestBus
Configuration: Bus type multi-drop
Standard: Conforms to TIA/EIA-485-A
Transfer rate: 19.2 kbps
Protocol: NestBus (M-System’s own protocol)
Max. transmission distance: 1 kilometer
Transmission media:
Shielded twisted-pair cable (CPEV-S 0.9 dia.)
Terminating resistor: Incorporated
Card No. adjustment: Rotary switch; 0 - F (16)

INSTALLATION
Power consumption
AC
 I/O selection codes other than R2:
Approx. 6 VA
 R2:
 
Approx. 5 VA at 100 V AC
 Approx. 7 VA at 200 V AC
 Approx. 8 VA at 264 V AC
DC: Approx. 3 W (125 mA)
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Work area: 170 mm (6.7") min. from the mounting surface required
Weight
 I/O selection codes other than R2: Approx. 400 g (0.88 lb)
 R2: Approx. 500 g (1.10 lb)

PERFORMANCE
Permissible power failure duration: ≤ 20 ms
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength
 I/O selection codes other than R2: 1500 V AC @ 1 minute
(NestBus to I/O to RUN contact output to power to FG)
 R2: 1500 V AC @ 1 minute
(NestBus to input 1 to input 2 to output 1 to output 2 to RUN contact output to power to FG)

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

M-System Co., Ltd.