Measurement-computing SC-1608 Series Bedienungsanleitung PDF herunterladen (Seite 27)

SC-1608 Series User's Guide Specifications

Power

Table 5. Power specifications

Parameter

Condition

Specification

External power input

connectors (Note 7)

 J1: barrel type

 J2: 2-pole terminal block, (16 AWG to 30 AWG)

External power input voltage

range (Note 8)

12V, ±5%

External power supply current

25 mA typical (Note 9)

1700 mA max, including all external loading

External power supply

(included)

MCC p/n PS-12V30WEPS

+12 V DC, 30 Watt, 5% regulation

+VO output voltage range

User I/O connector J35, pin 29

4.50 V min to 5.25 V max

+VO output current

10 mA max

Power LED

3V < V

ext

< 15 V: LED is ON

ext

> 15 V: LED OFF (power fault)

Power ON sequence (Note 10)

Arbitrary; either the SCC-8-8-2 or the OEM DAQ

board can be powered on first.

Note 7: The SCC-8-8-2 can be powered from either of the external power connectors J1 or J2. Do not

attempt to apply power to both external power connectors simultaneously.

Note 8: This specification applies to the actual voltage level present at the input to the external power

connector (J1 or J2) of the SCC-8-8-2, as any significant loading of the external power supply will

cause a voltage drop across the power supply cable.

Note 9: This is the total quiescent current requirement for the device, and does not include any potential

loading of the 8B modules, SSR modules, digital I/O bits, or +VO terminal.

Note 10: To prevent digital inputs from floating, both the SCC-8-8-2 and the OEM DAQ board should be

powered off while they are being assembled together.

Note 11: When using a USB-1608G-OEM-Series board, the total current available for 8B analog I/O modules

and SSR digital I/O modules is 1612 mA, maximum.

When using the E-1608-OEM, the total current available for 8B analog I/O modules and SSR digital

I/O modules is 1292 mA, maximum. For example, this current limitation would restrict the number

of 8B38 strain gage modules that can be installed on the SC-1608-2AO-ENET to six (when SSR

modules are installed), or seven (when no SSR modules are installed). Refer to the SC-1608 Series

User's Guide for details.

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