2-2
Chapter 2: Installation and Wiring
User’s Manual Pub. 0300272-03 Rev. B
Section 2.2
Power
Requirements
The module receives power through the bus interface from the +5 VDC/+24
VDC system power supply. The maximum current drawn by the module is
shown in the table below.
5 VDC 24 VDC Field Supply
55 mA
175 mA at 12 VDC (2.1 VA max)
77 mA at 24 VDC is typical (1.85 VA)
WARNING
Output may not remain steady or may drop out if the module is set up for
maximum power draw, and the input supply voltage is down close to its
low range (around 10 volts for the supply range). When the module is also
operating at, or close to, its maximum operating temperature of 55 degrees
Centigrade, the output reductions or dropouts may increase.
Maximum specified load on each channel is 750 ohms. Maximum
specified output current is 20 milliamperes.
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.
Section 2.3
General
Considerations
1734 I/O is suitable for use in an industrial environment when installed in
accordance with these instructions. Specifically, this equipment is intended for
use in clean, dry environments Pollution degree 2
1
and to circuits not exceeding
Over Voltage Category II
2
(IEC 60664-1)
3
.
2.3.1 Hazardous Location Considerations
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or
non-hazardous locations only. The following WARNING statement applies to
use in hazardous locations.
1
Pollution Degree 2 is an environment where normally only non-conductive pollution occurs except that
occasionally a temporary conductivity caused by condensation shall be expected.
2
Over Voltage Category II is the load-level section of the electrical distribution system. At this level,
transient voltages are controlled, and do not exceed the impulse
voltage capability of the product’s
insulation.
3
Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC)
designations.
Summary of Contents for 1734
Page 1: ......
Page 6: ...vi Point IO 2 Channel Isolated Output Analog HART Module User s Manual Pub 0300272 03 Rev B ...
Page 10: ...1 4 Chapter 1 Module Overview User s Manual Pub 0300272 03 Rev B ...
Page 13: ...Chapter 1 Module Overview 1 7 User s Manual Pub 0300272 03 Rev B See the block diagram below ...
Page 14: ...1 8 Chapter 1 Module Overview User s Manual Pub 0300272 03 Rev B ...
Page 24: ...2 10 Chapter 2 Installation and Wiring User s Manual Pub 0300272 03 Rev B ...
Page 36: ...3 12 Chapter 3 Configuring the Module User s Manual Pub 0300272 03 Rev B ...
Page 68: ...4 32 Chapter 4 OE2CIH and HART User s Manual Pub 0300272 03 Rev B ...
Page 74: ...A 6 Appendix A Module Specifications User s Manual Pub 0300272 03 Rev B ...
Page 76: ...I 2 Index User s Manual Pub 0300272 03 Rev B ...