Spectrum-controls 1734sc-OE2CIH Manuale Utente Scaricare il pdf (Pagina 70)

A-4 Appendix A: Configuration Information

User’s Manual Pub. 0300272-01 Rev. A.0

Table A-4 General Electrical Specifications

Parameter

Specification

Module location

1734-TBxx

Isolation Voltage

50 V (continuous) Functional Insulation Type, channels to backplane and between

channels (tested at 707 VDC for 1 minute)

5 V PointBus current

55 mA

External DC power

Supply Voltage

24 VDC nominal

10 VDC-28.8 VDC (Voltage Range)

For Power Supply Voltages less than 12 V limit the output load to 400 ohms if

using 20 mA output current or limit the output current to 16 mA into the

maximum load of 750 ohms.

Field Supply Power Draw

with 20 mA into 750 ohm

loads.

2.1 VA max

1.85 VA @ 24 VDC typ.

Field Supply Current Draw

with 20 mA into 750 ohm

loads.

175 mA @ 12 VDC max

77 mA @ 24 VDC typ.

Power dissipation

1.5 W max (worst case power dissipation is with 12 VDC supply, 20 mA load

currents into 750 ohms)

1.25 W typ. @ +24 Vin 20 mA load currents into 750 ohms

Thermal dissipation

6.12 BTU/hr max.

(4.27 BTU/hr typ. at 24 Vin)

Enclosure Dimensions

(H×W×D), approx.

56 × 12 × 77.50 mm (2.21 × 0.47 × 3.05 in.)

Key switch position

Unit will be shipped with the key switch in the 4th position

(that is, an Analog Output Module)

Enclosure type rating

None (open-style)

Wire size

Determined by installed Terminal Block

Data Format

Signed integer

Maximum Input’s Overload

Fault protected to ±24 VDC

Calibration

Factory-only calibration supported, no user calibration

Reliability

The Mean Time between Failure (MTBF) target for the 1734sc-OE2CIH module is

500,000 hours.

1 2 ... 65 66 67 68 69 70 71 72 73 74

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