Riken Keiki GD-3EC, Technical Manual

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10. Product Specifications 10-1 SD-3 specifications
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Model SD-3 SD-3 (contact model)
Transmission
method (4 - 20 mA)
3-wire analog transmission (common power supply <power supply, signal,
common>) or
2-wire analog transmission (current source)
Transmission
specifications
(4 - 20 mA)
4 mA - 20 mA DC (non-insulated linear output)
Maximum load resistance 600 Ω (with derating depending on power supply voltage)
Resolution: max. 250 divisions (depending on specifications)
Transmission cable
(4 - 20 mA)
Shielded cable 1.25 sq (1.38 mm 2 /AWG16) or
2.0 sq (2.08 mm 2 /AWG14) (same as power supply cable)
*To ensure explosion protection, use a cable designed for use in temperatures at
least 5 °C above the maximum anticipated ambient temperature.
Transmission
distance
(4 - 20 mA) For 1.25 sq (1.38 mm
2
/AWG16): Not exceeding 1.25 km
For 2.0 sq (2.08 mm
2
/AWG14): Not exceeding 2 km (with derating depending on
supply voltage)
Power source
24 V DC (18 V - 30 V DC)
*Use a power supply capable of minimum temporary output of 2.5 A to ensure that
fuses blow normally in the event of a product abnormality.
Power supply cable
Shielded cable 1.25 sq (1.38 mm 2 /AWG16) or
2.0 sq (2.08 mm 2 /AWG14) (same as transmission cable)
*To ensure explosion protection, use a cable designed for use in temperatures at
least 5 °C above the maximum anticipated ambient temperature.
Power consumption Refer to ‘10-1-3 Electrical ratings (SD-3)’.
Cable connectors M25 × 1.5
Operation method Dedicated magnet control key
Operating
temperature range
−40 °C - +70 °C (no sudden changes)
In accordance with sensor specifications if restrictions apply due to sensor
specifications
Operating humidity
range
0 %RH - 95 %RH (no condensation)
In accordance with sensor specifications if restrictions apply due to sensor
specifications
Housing material Stainless steel (SCS14)
Protection level IP66/67 equivalent
Installation type Wall mounting (standard)/2B pole mounting (optional)
Explosion-proof
construction
Flame-proof construction
Explosion-proof
class Varies depending on model.
Refer to <Explosion-proof performance data> in ‘2-4 Safety information’.
External
dimensions Diffusion type: Approx. 171 mm (W) × 277 mm (H) × 127 mm (D) (excluding projections)
Suction type: Approx. 171 mm (W) × 289 mm (H) × 127 mm (D) (excluding projections)
Weight Diffusion type: approx. 6.7 kg/Suction type: approx. 7.0 kg
*When used with the contacts closed, the contacts may seize due to vibration. Keep this precaution in mind.