BusWorks®
961/962PB Module User’s Manual ProfiBus Differential I/V Input
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Acromag, Inc. Tel:248-624-1541 Fax:248-624-9234 Email:
http://www.acromag.com
16
Input Burden
: A function of the wire gauge resistance used for primary
turns (the current carrying wire being monitored).
AC Current Sensor to Transmitter Wiring Distance
: 400 feet
maximum for 18 gauge wire. Other wire gauges can be used as long
as the resistance of both wires is less than 5
.
Input Overload
: The AC current sensor will withstand overload
conditions as follows:
20 times full scale for 0.01 seconds.
10 times full scale for 0.1 seconds.
5 times full scale for 1.0 second.
DC Voltage (962PB Only):
A 10:1 input divider is installed at the input
(utilizing divider resistor values of 100K and 10.5K). User-configurable
for the nominal bipolar DC voltage ranges of
10V,
5V,
2.5V,
1.25V,
625mV,
313mV,
156mV, and
78mV DC.
Input Impedance:
110.5K
.
Voltage Input Reference Test Conditions:
-10 to 10V DC input;
ambient temperature = 25
C; 24VDC supply.
Input Overvoltage Protection:
Bipolar Transient Voltage Suppressers
(TVS), 18V clamp level typical.
Accuracy:
Better than
0.05% of span, typical for nominal input ranges
(except 0-1mA). This includes the effects of repeatability, terminal point
conformity, and linearization, but does not include sensor error.
Measurement Temperature Drift:
Better than
50ppm/
C (±0.005%/
C).
Analog to Digital Converter (A/D):
A
16-bit
-
converter.
Resolution:
0.005% or 1 part in 20000 (961PB), 0.0025% or 1 part in
40000 (962PB, full bipolar range).
Input Conversion Rate:
80ms per channel, or 480ms for six input channels.
Input Filter:
Normal mode filtering, plus digital filtering optimized and fixed
per input range within the
-
ADC.
Input Filter Bandwidth:
-3dB at 3Hz, typical.
Noise Rejection (Normal Mode):
40dB @ 60Hz, typical with 100
input
unbalance.
Noise Rejection (Common Mode):
140dB @ 60Hz, typical with 100
input
unbalance.
ProfiBus Trade Organization (PTO):
Certified.
Safety Approvals:
CE marked (EMC Directive 89/336/EEC); UL Listed
(UL508, UL1604); cUL Listed (Canada Standard C22.2, No. 142-
M1987 & 213-M1987); Hazardous Locations: Class 1; Division 2;
Groups A, B, C, and D.
Dimensions:
1.05 inches wide, 4.68 inches tall, 4.35 inches deep. Refer to
the dimensions drawing at the front of this manual.
DIN Rail Mount:
Type EN50022; “T” rail (35mm).
I/O Connectors:
Removable plug-in type terminal blocks rated for
15A/300V; AWG #12-24 stranded or solid copper wire.
Case Material:
Self-extinguishing NYLON type 6.6 polyamide thermoplastic
UL94 V-2, color beige; general purpose NEMA Type 1 enclosure.
Printed Circuit Boards:
Military grade FR-4 epoxy glass.
Shipping Weight:
1 pound (0.45 Kg) packed.
Analog Inputs
General Specifications
Agency Approvals
Enclosure and Physical
