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Section 4: programming, Instructional booklet – Eaton Electrical RTC-50 User Manual

Page 7

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IB00405004E-70-8664

For more information visit: www.eaton.com

Instructional Booklet

Effective: June 2007

Page 7

Instruction Manual for the Eaton RTC-50

Automatic Transfer Switch Controller

SECTION 4: PROGRAMMING

4.1 Introduction

The RTC-50 controller is programmable via the two programming

jumpers shown in Figure 2.
The TDNE jumper enables the end-user to select a Time Delay Nor-

mal to Emergency setting of either 20 seconds or 50 seconds.

TDNE is a time delay that starts timing when the Generator source

becomes available either after the Utility becomes unavailable or

after the Go To Generator input is activated. The 50 second set-

ting may be used to allow for a longer warm-up period of the Gen-

erator.
The FREQ jumper enables the end-user to program the RTC-50 for

an operating frequency of either 50 or 60 hertz.

Figure 2. RTC-50 Programming Jumpers.

Table 2 is a summary of the Fixed and Jumper-selectable settings that are available in the RTC-50.

Table 2. Fixed and Jumper-Selectable Settings

DESCRIPTION

RANGE

FACTORY DEFAULT

FIXED/JUMPER

Time Delay Normal to Emergency

20 or 50 seconds

20 seconds

Jumper-selectable

Time Delay Emergency to Normal

10 seconds

10 seconds Fixed

setting

Time Delay Emergency Fail Timer

6 seconds

6 seconds

Fixed setting

Nominal Frequency

50 or 60 Hz

60 Hz

Jumper-selectable

Nominal Voltage

240 Vac

240 Vac

Fixed setting

Utility Undervoltage Dropout

70% of 240 Vac Nominal Voltage

70% of 240 Vac Nominal Voltage

Fixed setting

Generator Undervoltage Dropout

70% of 240 Vac Nominal Voltage

70% of 240 Vac Nominal Voltage

Fixed setting

Utility Undervoltage Pickup

80% of 240 Vac Nominal Voltage

80% of 240 Vac Nominal Voltage

Fixed setting

Generator Undervoltage Pickup

80% of 240 Vac Nominal Voltage

80% of 240 Vac Nominal Voltage

Fixed setting