United Security Products AVD-45c Instrukcja Obsługi Strona 26

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12 UDC 6300 Process Controller Product Manual 1/03
2.3 Preliminary Installation Procedure, Continued
Standard inputs range
selection
(Inputs 1 through 4)
The controller will be shipped set up for a range of 1 to 5 Volts.
If a 4 to 20 or 10 to 50 mA was specified (ordered), a kit of 5 resistors for
the appropriate range will be included in the shipping box. These must be
attached to the proper terminals as shown in Figure 2-6. The kit numbers
are:
4 to 20 mA Kit # 30755498-001 (250 Ohm Resistor)
10 to 50 mA Kit # 30755498-002 (100 Ohm Resistor)
Optional input 5 range
selection
(Low Level Input)
If an Input 5 - Low Level is ordered, kits will be supplied containing:
•A Cold Junction Resistor for Thermocouple ranges Kit # 30757088-501
•A Voltage Divider Assembly for 0 to 10 Volt ranges Kit # 30754465-001
•A 250 ohm Precision Resistor for 4 to 20 mA ranges Kit # 30755498-001
•A 100 ohm Precision Resistor for 10 to 50 mA ranges Kit # 30755498-
002
Attach the resistor for your specific range to the Input 5 terminals as
shown in Figure 2-7.
Electrical
considerations
The controller is considered “rack and panel mounted equipment” per
EN 61010-1, Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use, Part 1: General
Requirements. Conformity with 72/23/EEC, the Low Voltage Directive
requires the user to provide adequate protection against a shock hazard.
The user shall install this controller in an enclosure that limits
OPERATOR access to the rear terminals.
Controller grounding
PROTECTIVE BONDING (grounding) of this controller and the
enclosure in which it is installed shall be in accordance with National and
local electrical codes. To minimize electrical noise and transients that may
adversely affect the system, supplementary bonding of the controller
enclosure to a local ground, using a No. 12 (4 mm
2
) copper conductor, is
recommended.
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