Allen-Bradley Bulletin 1694 - User Manual

User Manual
Bulletin 1694 Electronic circuit protection for 24V DC
(Cat xxxx-xxx)
WARNING: Electrostatically sensitive sub-assemblies can be destroyed by voltages far below the human perception threshold. These voltages already occur if you touch a component
or electrical terminals of a sub-assembly without being electrostatically discharged. The damage of a sub-assembly caused by an overvoltage is often not immediately
recognised, but will be noticed only after a longer operating time.
Mounting or actuation of the 1694 connector arm must only be effected at dead-voltage. For start-up the 1694 connector arm must be closed.
Device to be installed, operated and maintained by trained personnel only.
The device can’t be serviced or repaired.
To secure device properly against unintended access, product shall be mounted in locked cabinet.
Notes
Features
Basic trip curve and schematic diagram 1694-PM
Bulletin 1694 Electronic circuit protection for 24V DC
• Connection to a higher or not reliably disconnected voltage can cause hazardous conditions or damages
• Only the intended circuit protectors must be used
• The technical data of the circuit protectors used have to be observed
• The entire power distribution system must only be installed by qualified personnel
• Only after expert installation must the device be supplied with power
• After tripping of the circuit protector and before reset, the cause of the failure (short circuit or overload) must be remedied
• The national standards have to be observed for installation and selection of feed and return cables.
• Combination of supply modules, circuit protection and power distribution
• Selective load protection by means of electronic trip curve
• No accessories required for connecting the components
• Width per channel only 12.5 mm (1-channel) or 6.25mm (2-channel)
• Integral fail-safe element, adjusted to current rating
• Switching capacitive loads up to 20,000 µF (at IN > 6A)
• Manual ON/OFF/reset momentary switch
• Clear status indication by means of LED and auxiliary contact (1694-PF supply module)
• Connection via push-in terminals
• 1694-PMx available in Class 2 version with nominal currents: 1A, 2A, 3A, 4A
Bulletin 1694 Electronic Circuit Protection is a modular solution with a max. system capacity of 40A. The protection modules come in a fix current rating
in a range from 1A…10A. Designed for 24V DC circuits, the 1694 provides comprehensive protection against short circuit and overcurrent conditions
while allowing for inrush current.
trip time in seconds
times rated current trip curve
1.000
100
10
1
0,1
0,01
0,001
0,8 1,0 1,2 1,4 1,6 1,8 2,0 2,2 2,4 2,6 2,8 3,0 3,2 3,4 I
KS
Schematic diagram
blade fuse
semiconductor
4 A
LINE
4 A
LOAD
Do not open device’s enclosure.

Summary

Basic Trip Curve and Schematic Diagram

Product Features

Key characteristics and capabilities of the 1694 Electronic Circuit Protection modules.

Important Notes and Precautions

Critical considerations for installation, operation, and safety of the protection modules.

Technical Data

Operating Voltage and Current Specifications

Details on operating voltage, closed circuit current, rated current, and reverse polarity protection.

Status Indicators and Load Circuit Behavior

Describes LED status indications, load current warning limits, and hysteresis.

Disconnection and Trip Time Characteristics

Specifies overload disconnection thresholds, trip times, and short circuit trip times.

Ambient Temperature and Voltage Drop

Covers the influence of ambient temperature and voltage drop across the module.

Advanced Technical Parameters

Fail-Safe Features and Voltage Monitoring

Details on integrated fail-safe elements, low voltage monitoring, and ON delays.

Load Circuit Control and Reset Functions

Information on load circuit disconnection, switching, and reset functions.

Capacitive Load Handling and Circuit Configurations

Covers capacitive load handling and recommendations for free-wheeling circuits.

General Environmental and Physical Data

Ambient and Storage Conditions

Specifies ambient temperature, storage temperature, and humidity requirements.

Physical Characteristics and Protection

Details on corrosion resistance, vibration, degree of protection, and terminal specifications.

EMC, Insulation, and Dimensions

Covers EMC requirements, insulation co-ordination, dielectric strength, and physical dimensions.

Conformity and Approvals

Lists CE marking, RoHS compliance, and relevant UL/cULus certifications.

Time;Current Characteristic and Temperature Factor

Characteristic Curve Explanation

Explains the typical time/current characteristic graph for trip curves.

Temperature Factor Table

Provides a table for temperature factor adjustments for continuous duty.

Module Dimensions and Installation Layout

Module Dimensional Drawings

Visual representation of 1694-PM1 and 1694-PM2 module dimensions.

General Installation Recommendations

Guidance on screwdriver usage and preferred mounting position.

Product Selection Guide - 1694-PM Series

1694-PM Catalog Codes and Descriptions

List of catalog codes for 1-channel and 2-channel protection modules with current ratings.

Related Product Series - PFx and DMx

Power Feed and Distribution Module Overview

Brief description of 1694-PFx power feed and 1694-DMx distribution modules.

Distribution Module (1694-DMx) Data

DMx Operational Data and Dimensions

Details on DMx operational current, voltage, dimensions, and weight.

Power Feed Module (1694-PFx) Data

PFx Operating and Auxiliary Data

Specifies PFx operating voltage, current, dimensions, and auxiliary contact details.

Terminal Specifications

PFx Terminal Details

Information on push-in terminals and wire stripping length for PFx modules.

Conformity and Approvals for DM;PF Series

DM and PF Series Conformity

Lists CE marking, RoHS compliance for DM and PF modules.

DM and PF Series Approvals

Details UL and cULus certifications for DM and PF modules.

Specific Module Dimensions and Schematics

1694-PF1244 Power Feed Dimensions

Dimensional drawing for the 1694-PF1244 Power Feed module (Left Mount).

1694-PF1244;PFA1244 Schematic

Schematic diagram for 1694-PF1244 and 1694-PFA1244 with 1694-PM.

Power Feed Module Dimensional and Schematic Details

1694-PF3 L4 C Power Feed Dimensions

Dimensional drawing for the 1694-PF3L4C Power Feed module (Centre/Right Mount).

1694-PF3 L4 C Schematic Diagram

Schematic diagram for the 1694-PF3L4C Power Feed module.

Power Feed Module Dimensional and Schematic Details II

1694-PF2 L4 S Power Feed Dimensions

Dimensional drawing for the 1694-PF2L4S Power Feed module (Center Mount).

1694-PF2 L4 S Schematic Diagram

Schematic diagram for the 1694-PF2L4S Power Feed module.

Distribution Module Dimensional and Schematic Details

1694-DM1 L2 Distribution Module Dimensions

Dimensional drawing for the 1694-DM1L2 Distribution Module.

1694-DM1 L2 Schematic Diagram

Schematic diagram for the 1694-DM1L2 Distribution Module.

Distribution Module Dimensional and Schematic Details II

1694-DM2 L2 Distribution Module Dimensions

Dimensional drawing for the 1694-DM2L2 Distribution Module.

1694-DM2 L2 Schematic Diagram

Schematic diagram for the 1694-DM2L2 Distribution Module.

Power Feed Module Dimensional and Schematic Details III

1694-PF1 G4 Power Feed Dimensions

Dimensional drawing for the 1694-PF1G4 Power Feed module.

1694-PF1 G4 Schematic Diagram

Schematic diagram for the 1694-PF1G4 Power Feed module.

Distribution Module Dimensional and Schematic Details III

1694-DM3 G2 Distribution Module Dimensions

Dimensional drawing for the 1694-DM3G2 Distribution Module.

1694-DM3 G2 Schematic Diagram

Schematic diagram for the 1694-DM3G2 Distribution Module.

Power Feed Module Dimensional and Schematic Details IV

1694-PF3 G4 Power Feed Dimensions

Dimensional drawing for the 1694-PF3G4 Power Feed module.

1694-PF3 G4 Schematic Diagram

Schematic diagram for the 1694-PF3G4 Power Feed module.

Product Selection Guide - PFx and DMx Series

PFx;DMx Catalog Codes and Descriptions

List of catalog codes for Power Feed and Distribution Modules.

Sample System Configuration

Module Configuration Example

Illustrates a typical module arrangement for a 24V DC system.

Mounting and Removal Procedures

Mounting Modules on DIN Rail

Instructions for pushing and mounting modules onto a symmetrical rail.

Removing Modules from DIN Rail

Procedure for unlatching, tilting, and removing modules from the rail.

General Installation Recommendations

Advice on screwdriver usage and preferred mounting orientation.

Housing Replacement and Disassembly

Latch Mechanism and Disassembly

Demonstrates unlatching and pulling modules for replacement or disassembly.

Connector Arm Locking Mechanism

Illustrates how connector arms can be sealed with an enclosure.

Installation Clearance and Area

Cable Duct Clearance

Specifies the distance requirement between cable duct and connector arm.

Installation and Operating Area

Defines the installation and operating areas for the 1694 modules.

Rockwell Automation Support and Resources

Online Support and Documentation

Links to websites for environmental compliance, installation instructions, and technical data.

Connect with Us and Contact Information

Social media links and contact details for Rockwell Automation technical support.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The Bulletin 1694 Electronic Circuit Protection for 24V DC is a modular solution designed to provide comprehensive protection against short circuit and overcurrent conditions in 24V DC circuits, while also allowing for inrush current. It boasts a maximum system capacity of 40A, with protection modules available in fixed current ratings ranging from 1A to 10A.

Function Description

The device functions as a selective load protector, utilizing an electronic trip curve to safeguard connected loads. It integrates supply modules, circuit protection, and power distribution capabilities. The protection modules are designed to handle capacitive loads up to 20,000 µF (for IN > 6A). Each module features a manual ON/OFF/reset momentary switch for local control. For system monitoring, the 1694-PF supply module provides clear status indication via an LED and an auxiliary contact.

Important Technical Specifications

• Operating Voltage: DC 24V (min. 18V, max. 30V), not suitable for battery-buffered applications.
• Closed Current (in ON condition): Typically 5mA for 1-channel (1694-PM1) and 8mA for 2-channel (1694-PM2) modules.
• Reverse Polarity Protection: Yes, without load.
• Rated Current (IN): Available in 1A, 2A, 3A, 4A, 6A, 8A, 10A for 1-channel modules, and 1A/1A, 2A/2A, 3A/3A, 4A/4A, 6A/6A for 2-channel modules.
• Load Current Warning Limit (IwLimit): Typically 0.9 × IN, with a hysteresis of typically 5%.
• Overload Disconnection (IOL) with Trip Times (toL):
  • Typically IOL: IN x 1.05, toL: 3s
  • Typically IOL: IN x 1.35, toL: 0.5s
  • Typically IOL: IN x 2.00, toL: 0.1s
  • Typically IOL: IN x 2.50, toL: 0.012s
• Short Circuit Trip Time (tks): Typically 0.002s at IKS (short circuit current), depending on the power source.
• Leakage Current in Load Circuit (in OFF condition): Typically <1mA.
• Voltage Drop in Load Circuit (at IN for 1694-PM between LINE+ and LOAD+):
  • IN: 1A (CL2): typically 180mV
  • IN: 2A (CL2): typically 110mV
  • IN: 3A: typically 120mV
  • IN: 3A-CL2: typically 130mV
  • IN: 4A: typically 115mV
  • IN: 4A-CL2: typically 180mV
  • IN: 6A: typically 170mV
  • IN: 8A: typically 160mV
  • IN: 10A: typically 180mV
• Fail-Safe Element (Integrated Fuse): Adjusted to the corresponding rated current IN, with specific fail-safe current ratings for each nominal current (e.g., 1A (CL2) has a 1A fail-safe fuse, 3A has a 3.15A fail-safe fuse).
• Low Voltage Monitoring of Operating Voltage: OFF at typically UB < 16.0V, ON at typically UB > 19.0V, with a hysteresis of typically 2V and automatic OFF and ON operation.
• ON Delay:
  • With power ON: channel 1: typically 100ms (1694-PM), channel 2: typically 200ms (1694-PM).
  • When switching on via ON/OFF momentary switch: channel 1: typically 5ms, channel 2: typically 100ms.
  • After an undervoltage: channel 1: typically 5ms, channel 2: typically 5ms.
• Disconnection of the Load Circuit: Manually on the device with the ON/OFF momentary switch, after an overload/short circuit disconnection with storage (no automatic reset), temporarily at undervoltage, or at no operating voltage.
• Switching on the Load Circuit: Unit can only be switched on when operating voltage is applied. The device restarts with the last stored condition.
• Reset Function: A blocked load output (blocked by overload/short circuit) can be reset or switched on manually by the momentary ON/OFF switch (LED button).
• Capacitive Loads (DC24V): Up to 5,000µF for IN: 1A; up to 10,000µF for IN: 2A, 3A; up to 12,000µF for IN: 4A; up to 20,000µF for IN: >6A.
• Free-Wheeling Circuit: External free-wheeling circuit at inductive load (rating according to load) is recommended.
• Parallel Connection of Several Load Outputs: Not permitted.
• Ambient Temperature (Tamb): -25°C to +60°C (without condensation, cf. EN 60204-1).
• Storage Temperature: -30°C to +70°C.
• Mounting Temperature: +5°C to +60°C.
• Humidity: 96 hrs / 95% RH RH/40°C to IEC 60068-2-78-Cab climate class 3K3 to EN 60721.
• Corrosion (1694-DM and 1694-PF accessories only): 96hrs. in 5% salt mist to IEC 60068-2-11 test Ka.
• Vibration Resistance: 3g, test to IEC 60068-2-6 test Fc.
• Degree of Protection (Operating area 1694-PM): IEC 60529, DIN VDE 0470, IP30.
• EMC Requirements: Emitted interference: EN 61000-6-3, Noise immunity: EN 61000-6-2.
• Insulation Co-ordination (IEC 60934): 0.5kV / pollution degree 2.
• Dielectric Strength: Max. DC 30V (load circuit).
• Insulation Resistance (OFF condition): N/A, only electronic disconnection.
• Modules Mountable Side by Side: Max. 36 channels allowed. Total current value shall be below 40 Amps (sample case: 36 channels refer to 1 Amp nominal current channels).
• Terminals (Push-in terminal PT 2.5): LOAD+: 0.14mm² to 2.5mm² flexible, AWG24-AWG14 str. Rockwell Automation recommends using ferrules for smaller diameter cables.
• Wire Stripping Length: 8mm to 10mm.
• Dimensions (h x w x d): 12.5 x 80 x 98.5 mm.
• Weight: Approx. 60g.

Usage Features

• Compact Design: Width per channel is only 12.5mm (1-channel) or 6.25mm (2-channel), optimizing space in control cabinets.
• Easy Connection: No additional accessories are required for connecting components, as it utilizes push-in terminals.
• Visual Status Indication: An LED provides clear status feedback:
  • Green: Load circuit connected.
  • Flashing orange-green: Load current warning limit reached.
  • Orange: Overload or short circuit until disconnection.
  • Red: After disconnection (trip condition) due to overload or short circuit, or after undervoltage release of operating voltage in ON condition with autoreset.
  • OFF (Non Illuminated): Device switched off by means of ON/OFF momentary switch or no operating voltage.
• Temperature Factor: The time/current characteristic is dependent on ambient temperature. To determine the maximum load current, the current rating must be multiplied by the temperature factor, and the factor for side-by-side mounting must also be considered.
  • Ambient Temperature [°C]: 0, 10, 23, 40, 50, 60
  • Temperature Factor: 1, 1, 1, 0.95, 0.90, 0.85
• Mounting: Designed for snap-on socket for DIN rail EN 60715-35x7.5. Horizontal mounting position is preferred.
• Voltage Measuring Point: Small openings above the screwdriver insert (marked as 2.1 and 2.2) serve as voltage measuring points.
• Wire Connection Area: Larger openings under the screwdriver insert (marked as LOAD +) are for wire connections.
• Screwdriver for Installation: Blade-style screwdriver size 1 for smaller Push-in terminal (PT 2.5) inserts, and size 4 for larger Push-in terminal (PT 10) inserts.

Maintenance Features

• Non-Serviceable/Repairable: The device cannot be serviced or repaired. Do not open the device's enclosure.
• Installation and Operation by Trained Personnel: Device must be installed, operated, and maintained by trained personnel only.
• Secure Mounting: To properly secure the device against unintended access, it shall be mounted in a locked cabinet.
• Electrostatic Discharge (ESD) Warning: Electrostatically sensitive sub-assemblies can be damaged by voltages below human perception. Damage may not be immediately recognized but will manifest after a longer operating time. Mounting or actuation of the 1694 connector arm must only be done at dead-voltage.
• Troubleshooting: After tripping of the circuit protector and before reset, the cause of the failure (short circuit or overload) must be remedied.
• Dead-Voltage for Exchange/Disassembly: Exchange/disassembly should only be performed in a dead-voltage condition, as potentials will be interrupted.
• Connector Arm Sealing: Connector arms can be sealed with the enclosure.

Allen-Bradley Bulletin 1694 Specifications