Datasheet Ecm 5658 Analog 4pgv1 A80501 Press

Conversion Module 8-channel Current Comparator

Buffer AMP

IO

IO

Buffer AMP

IO

IO

Buffer AMP

IO

IO

Carrier “J1”

5 Signals

U2 ADS8344 8 Channel 16 bit A/D

Buffer AMP

IO

IO

Buffer AMP

IO

IO

Buffer AMP

I/O “J1”

IO

IO

Buffer AMP

IO

IO

Buffer AMP

IO

IO

GND,+3.3V,+12V,-12V

• Analog input ECM

5658

• Eight-channel 4-20 milliamp current measurement

Specifications Temperature (Operating): -40 to +85 degrees C

• Precision 0.1% 100-ohm current sense resistor

Temperature (Storage): -55 to +100 degrees C

• 12-bit analog to digital conversion

Altitude: Not Specified or Characterized. Typical similar equipment is at 15,000 ft.

• Eight-channel scan rate 12.5 KHz

Humidity (Operating/Storage): 5% to 90% non-condensing.

• Wide common mode range +/- 100 volts

Vibration: Not specified or Characterized.

• On-board serial identification circuit

Shock: Not specified or Characterized.

• Industrial temperature • RoHS compliant • Patent pending

MTBF: Available on request. Weight: 3 grams. Power: TBD

Ordering Information 140 Mount Holly Bypass Unit 1 Lumberton, NJ 08048 Tel: 609-267-8988 Fax: 609-261-1011 www.technobox.com

5658: 8 Channel Current Com parator 200V CMR, 16-bit A:D converter, 100-ohm current sense, 4 to 20 ma loop sense

The Technobox P/N 5658 ECM module provides eight channels of 12 bit current measurement in the 0 to 25 milli-amp range. For each channel the common mode voltage range is -100 volts to +100 volts. Each channel uses a precision 100 ohm current sense resistor, creating a voltage drop of 2V in the current loop at 20 milli-amps. The current should be uni-directional however as shown in the application section. Maximum data rates are 100KHz, but samples per channel will depend on the number of channels scanned, if all eight channels are scanned the rate per channel would be 100KHz / 8 = 12.5KHz. Each of the current sense resistors can carry a maximum of 25 milli-amps. Also the current flow should always be from the odd numbered IO signal to the even numbered IO signal. Positive Voltage application, Apply up to +100 volts to the odd numbered IO signal in the case of a positive voltage current loop.

4-20 Milli-Amp Transmitter 24 Volts

IO1 P/N 5658 Current Sense ECM

IO0

76 Volts

Ground Reference Negative Voltage application, Apply up to -100 volts to the even numbered IO signal in the case of a negative voltage current loop.

4-20 Milli-Amp Transmitter -24 Volts

IO0 P/N 5658 Current Sense ECM

IO1

-76 Volts

Ground Reference

User IO IO0 IO1 IO2 IO3 IO4 IO5 IO6 IO7 IO8 IO9 IO10 IO11 IO12 IO13 IO14 IO15

J1 Pin number 16 18 28 30 52 54 64 66 65 63 53 51 29 27 17 15

Direction OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT

Description*

U2 CH0 Current Output U2 CH0 Current Input U2 CH1 Current Output U2 CH1 Current Input U2 CH2 Current Output U2 CH2 Current Input U2 CH3 Current Output U2 CH3 Current Input U2 CH4 Current Output U2 CH4 Current Input U2 CH5 Current Output U2 CH5 Current Input U2 CH6 Current Output U2 CH6 Current Input U2 CH7 Current Output

Negative Positive Negative Positive Negative Positive Negative Positive Negative Positive Negative Positive Negative Positive Negative

U2 CH7 Current Input Positive

Table 1 User IO signal connections *Description presumes conventional current flow from positive to negative. Carrier Data DA0 DA1 DA2 DA3 DA4 DA5 DA6 DA7 DA8 DA9 DA10 DA11 DA12 DA13 DA14 DA15 DA16 DA17 DA18 DA19 DA20 DA21 DA22 DA23 DA24 DA25 DA26 DA27

J1 Pin number 10 12 22 24 34 36 46 48 58 60 70 72 71 69 59 57 47 45 35 33 23 21 11 9 40 41 42 39

J1 INPUT INPUT INPUT OUTPUT OUTPUT N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C

Table 2 Carrier DA signal connections

Description

U2, Chip Select when Low U2, Data clock, clocks data in/out of A/D converter U2, Data Input, clocked by rising edge of data clock U2, Data output, clocked by falling edge of data U2, Busy, A/D conversion done when signal goes No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection No connection

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DS5658-A80501