Honeywell UDC2500 manual Permissible Wiring Bundling, Bundle No Wire Functions

Installation

Digital equipment is especially sensitive to the effects of electrical noise. Your controller has built-in circuits to reduce the effect of electrical noise from various sources. If there is a need to further reduce these effects:

•Separate External Wiring—Separate connecting wires into bundles

(See Permissible Wiring Bundling - Table 2-5)and route the individual bundles through separate conduit metal trays.

Use Suppression Devices—For additional noise protection, you may want to add suppression devices at the external source. Appropriate suppression devices are commercially available.

ATTENTION

For additional noise information, refer to document number 51-52-05-01, How to Apply Digital Instrumentation in Severe Electrical Noise Environments.

Permissible Wiring Bundling

Table 2-5 Permissible Wiring Bundling

Bundle No.		Wire Functions
1	•	Line power wiring
	•	Earth ground wiring
	•	Line voltage control relay output wiring
	•	Line voltage alarm wiring

2Analog signal wire, such as:

•Input signal wire (thermocouple, 4 to 20 mA, etc.)

•4-20 mA output signal wiring

	Digital input signals
3	•	Low voltage alarm relay output wiring
	•	Low voltage wiring to solid state type control circuits
	•	Low voltage wiring to open collector type control circuits

18 UDC2500 Universal Digital Controller Product Manual 4/07