Rockwell Automation 700-RTC, 700-RTCR User Manual

Installation Instructions

Bulletin 700 Type RTC & RTCR Solid-State
Relays

Instruction Sheet

Description

Important: Save these instructions for future reference.

Bulletin 700 Type RTC relays are designed for industrial environments. They
offer the reliability and accuracy of solid-state timing along with the contact
isolation of conventional electromechanical relays. The contacts are
hermetically sealed in glass for reliability.

Type RTC relays are available with up to two timed contacts and two

nstantaneous contacts in any N.O. – N.C. combination. A sixteen position

i
rotary switch is used to set the mode to on-delay or off-delay, and there are
eight timing ranges in each mode. The timing period is set by means of a
self-contained potentiometer in the Type RTC relays. Relays with provisions
for an external timing adjustment potentiometer are identified as Type RTCR.

The N.O. and N.C. contacts are designed to be changed or added in the field.

relay can be easily modified to have any combination of N.O. and N.C.

A
contacts, limited to two timed and two instantaneous contacts maximum.

Note: If
instantaneous positions of C5/C6 and C7/C8, they must NOT be field
installed.

(2) Normally Closed (N.C.) contact cartridges are required for the

Please order this contact configuration direct from the factory.

UL Listed

1 Publication 700-IN003C-EN-P - October 2009

Bulletin 700 Type RTC relays are listed by Underwriters’ Laboratories, Inc. for
use in Class I, Division 2, Groups A, B, C, and D hazardous locations as
defined by the National Electric Code.

2 Bulletin 700 Type RTC & RTCR Solid-State Relays

ATTENTION

Orientation of cartridges

Method of removing cartridge

Projection for Keying

Insert cartridge with this end at top of timer

Adding or Changing Contact Cartridges

Figure 1. Removing and Orientation of Cartridges

Timers are supplied with two slots for timed contacts and two slots for
instantaneous contacts. “Dummy” cartridges are placed in any unused
cartridge slots to guard against entrance of foreign material.

Contact Cartridges

Ty pe Color Catalog Number

Normally Open Gray 700-CRT5

Normally Closed Orange 700-CRT6

Dummy Black 700-CR9

The N.O. cartridges, N.C. cartridges, and dummy cartridges are removable and
interchangeable using the same cartridges for both timed and instantaneous
slots, with the exception of the N.C. cartridges in the instantaneous positions
(reference Note on page 1) Use the following procedure:

1. Disconnect all power from timer or timer panel.

2. Loosen the two front housing screws (See Figure 1.) until the housing

slides back along the screws for approximately one inch. The screws are
captive and will restrain the front housing to protect the circuit cable
that connects to the timer base.

The glass envelopes in the N.O. and N.C. cartridges can be
damaged if dropped or mishandled. Damaged cartridges
must be replaced.

Publication 700-IN003C-EN-P - October 2009

3. Remove the N.O. or N.C. contact or the dummy cartridge by lifting it
out of the slot. A screwdriver is required to pry out the dummy
cartridge.

Bulletin 700 Type RTC & RTCR Solid-State Relays 3

ATTENTION

ATTENTION

Be careful not to damage circuit table.

4. Insert the desired cartridge. The cartridges are keyed and must be
inserted with correct orientation (See Figure 1.).

5. Slide front housing back down carefully to avoid cable damage. Tighten
screws.

Setting the Mode and Timing Range

Figure 2. Removing Corner Cover

Method of removing corner cover

Unpredictable contact operation can occur if the mode
setting is changed with power applied to any terminal.

1. Remove the corner cover by pressing down on the top of the cover with
your thumb and slide forward (See Figure 2.).

Operation

2. Set the desired position on the sixteen position rotary switch using a
small screwdriver.

3. Replace corner cover by sliding it back into its original position.

Table 1 outlines timer operation in both the on-delay and off-delay modes.
The red LED indicator on the front housing of the timer gives visual
indication of timing, timed out, and reset or stable timer conditions. At certain
settings, there may be a slight delay in the LED operation. The timing
sequence is

not affected by this delay.

Publication 700-IN003C-EN-P - October 2009