Installation Instruction Owner manual

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Installation Instructions

PLC-5 Relay Cartridge

(Cat. No. 1785-RC)

The 1785-RC Relay Cartridge serves as an interface from the PLC-5

programmable controller to a user supplied external device such as the

Allen-Bradley 700P relay. The relay cartridge contains an internal relay

contact that is opened or closed based on attempts to edit user programs or

force I/O. The user supplies 120VAC which is switched by the internal relay

for use by the external device - this may include power from ungrounded

floating systems.

What this Document Describes

Controller Compatibility and Firmware Requirement

The relay cartridge is compatible with the PLC-5/40B, -5/60B and -5/80B

controllers.

Section Page

Controller Compatibility and Firmware Requirement 1

Install the Relay Cartridge 2

Wire the Relay 4

Install Firmware and Apply Power 5

How the Relay Cartridge Works 6

Status Indicators 7

European Union Compliance 7

CSA Hazardous Location Approval 9

Specifications 11

Summary of content (12 pages)

PAGE 1
Installation Instructions PLC-5 Relay Cartridge (Cat. No. 1785-RC) The 1785-RC Relay Cartridge serves as an interface from the PLC-5 programmable controller to a user supplied external device such as the Allen-Bradley 700P relay. The relay cartridge contains an internal relay contact that is opened or closed based on attempts to edit user programs or force I/O.
PAGE 2
3/& 5HOD\ &DUWULGJH ,PSRUWDQW Use of the relay cartridge requires the Series E, revision E firmware release. If your processors are not already at this revision level, contact Rockwell Automation Technical Support to receive this firmware. Install the Relay Cartridge 1. Turn off power to the I/O chassis and PLC-5 controller. ! ATTENTION: Do not insert or remove the relay cartridge while power is applied to the chassis and/or controller.
PAGE 3
/& 5HOD\ &DUWULGJH Note: If the relay cartridge is not inserted into the PLC-5 processor, the processor will operate normally, but will not exhibit any of the necessary relay cartridge functions . Relay cartridge Removable connector Retention bracket Keying pin Screw 18590-M 3. Remove the black screw on the lower Communication Interface Plug on the PLC-5 controller. 4.
PAGE 4
3/& 5HOD\ &DUWULGJH Wire the Relay Cartridge 1. Detach the 4-pin clamp-style removable connector from the relay cartridge and connect wiring as shown below: ,PSRUWDQW The required wire diameter specification for the relay cartridge is 12-22 AWG. The wire must be solid, stranded or fine stranded copper. The maximum length between the connector and power source/relay must be less than 10 meters (unless all circuit components, modules and the power source are located within the same NEMA enclosure).
PAGE 5
3/& 5HOD\ &DUWULGJH Install Firmware and Apply Power Before you can use the relay cartridge, your processors must be at the Series E, revision E level. If they are not, contact Rockwell Automation Technical Support to receive this firmware. Apply power to the chassis and PLC-5 controller. When the controller is in Program or Run mode, all of the status file information is updated. Four status bits (0-3) provide relay cartridge status.
PAGE 6
3/& 5HOD\ &DUWULGJH ,PSRUWDQW When the relay cartridge internal relay coil switches (from open to closed, or closed to open), you must wait at least 50ms before acting on the internal relay contact status bit 2. The Internal Relay Contact Status indicator may briefly flash RED during this time. ,PSRUWDQW You must qualify relay contact status bit 2 with the relay cartridge 120Vac external power valid bit 0 to assure correct internal relay contact status.
PAGE 7
3/& 5HOD\ &DUWULGJH Status Indicators AC STATUS External Power Status Relay Driver Status Internal Relay Status External Power Status Internal Relay Coil Status Internal Relay Contact Status GREEN valid power RED power low or not connected GREEN relay driven closed OFF relay driven open GREEN contact status OK RED contact failure OFF contact status not valid - insufficient power European Union Directive Compliance If this product has the CE mark, it is approved for installation with
PAGE 8
3/& 5HOD\ &DUWULGJH This product is intended for use in an industrial environment. Low Voltage Directive This product is tested to meet Council Directive 73/23/EEC Low Voltage, by applying the safety requirements of EN 61131-2 Programmable Controllers, Part 2 - Equipment Requirements and Tests.
PAGE 9
3/& 5HOD\ &DUWULGJH CSA Hazardous Location Approval CSA Hazardous Location Approval Approbation d’utilisation dans des emplacements dangereux par la CSA CSA certifies products for general use as well as for use in hazardous locations. Actual CSA certification is indicated by the product label as shown below, and not by statements in any user documentation. La CSA certifie les produits d’utilisation générale aussi bien que ceux qui s’utilisent dans des emplacements dangereux.
PAGE 10
3/& 5HOD\ &DUWULGJH CSA Hazardous Location Approval Approbation d’utilisation dans des emplacements dangereux par la CSA The following warnings apply to products having CSA certification for use in hazardous locations. Les avertissements suivants s’appliquent aux produits ayant la certification CSA pour leur utilisation dans des emplacements dangereux.
PAGE 11
3/& 5HOD\ &DUWULGJH Specifications Backplane Current 0.200A @ +5Vdc Number of Outputs 1 (N.O. Contact) Contact Rating 120Vac 50/60Hz @ 0.500A Pilot Duty minimum 100,000 mechanical switching cycles Wiring 12-22 AWG Category 11, use minimum 75° C copper wiring Weight 70 g 2.0 oz.
PAGE 12
3/& 5HOD\ &DUWULGJH PLC-5 and RSLogix are trademarks of Rockwell Automation. CSA logo is a registered trademark of the Canadian Standards Association. Worldwide representation.