Red-lion TSC User Manual download pdf (Page 14)

SELECT AC POWER (115/230 VAC)

The AC power to the unit must be selected for either 115 VAC or 230 VAC.

The selector switch is located inside the case near the rear of the unit on the main

circuit board (See hardware figure and/or label on inside or outside of case). The

unit is shipped from the factory with the switch in the 230 VAC position.

Note: Damage to the controller may occur if the AC selector switch is set

incorrectly.

EMC INSTALLATION GUIDELINES

Although this unit is designed with a high degree of immunity to

ElectroMagnetic Interference (EMI), proper installation and wiring methods

must be followed to ensure compatibility in each application. The type of

electrical noise, source or coupling method into the unit may be different for

various installations. Listed below are some EMC guidelines for successful

installation in an industrial environment.

1. The unit should be mounted in a metal enclosure, which is properly

connected to protective earth.

2. Use shielded (screened) cables for all Signal and Control inputs. The shield

(screen) pigtail connection should be made as short as possible. The

connection point for the shield depends somewhat upon the application.

Listed below are the recommended methods of connecting the shield, in

order of their effectiveness.

a. Connect the shield only at the panel where the unit is mounted to earth

ground (protective earth).

b. Connect the shield to earth ground at both ends of the cable, usually

when the noise source frequency is above 1 MHz.

c. Connect the shield to common of the unit and leave the other end of the

shield unconnected and insulated from earth ground.

3. Never run Signal or Control cables in the same conduit or raceway with AC

power lines, conductors feeding motors, solenoids, SCR controls, and

heaters, etc. The cables should be run in metal conduit that is properly

grounded. This is especially useful in applications where cable runs are

long and portable two-way radios are used in close proximity or if the

installation is near a commercial radio transmitter.

4. Signal or Control cables within an enclosure should be routed as far

away as possible from contactors, control relays, transformers, and

other noisy components.

5. In extremely high EMI environments, the use of external EMI suppression

devices, such as ferrite suppression cores, is effective. Install them on Signal

and Control cables as close to the unit as possible. Loop the cable through the

core several times or use multiple cores on each cable for additional protection.

Install line filters on the power input cable to the unit to suppress power line

interference. Install them near the power entry point of the enclosure. The

following EMI suppression devices (or equivalent) are recommended:

Ferrite Suppression Cores for signal and control cables:

Fair-Rite # 0443167251 (RLC #FCOR0000)

TDK # ZCAT3035-1330A

Steward #28B2029-0A0

Line Filters for input power cables:

Schaffner # FN610-1/07 (RLC #LFIL0000)

Schaffner # FN670-1.8/07

Corcom #1VR3

Note: Reference manufacturer’s instructions when installing a line filter.

6. Long cable runs are more susceptible to EMI pickup than short cable runs.

Therefore, keep cable runs as short as possible.

7. Switching of inductive loads produces high EMI. Use of snubbers across

inductive loads suppresses EMI.

Snubbers:

RLC #SNUB0000

WIRING CONNECTIONS

After the unit has been mechanically mounted, it is ready to be wired. All

wiring connections are made on a fixed terminal block. When wiring the unit, use

the numbers on the label to identify the position number with the proper function.

All conductors should meet voltage and current ratings for each terminal.

Also cabling should conform to appropriate standards of good installation,

local codes and regulations. It is recommended that power supplied to the unit

(AC or DC) be protected by a fuse or circuit breaker. Strip the wire leaving

approximately ¼" (6 mm) bare wire exposed (stranded wires should be tinned

with solder). Insert the wire into the terminal and tighten the screw until the

wire is clamped in tightly. Each terminal can accept up to two, 18-gage wires.

Wire each terminal block in this manner.

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Red-lion TSC User Manual Page 14

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