Interface modules for use with a primary safety device

• Interface Modules provide isolated safety output contacts for a primary safety

device (e.g., a safety light screen or safety module) which has solid-state or

hard contact outputs and external device monitoring (EDM) capability.

• Model IM-T-9A features three normally open 6 amp redundant-output chan-

• Model IM-T-11A features two normally open redundant-output channels and

one normally closed non-safety auxiliary output channel, all rated at 6 amps.

• Normally closed outputs for connection to the primary safety device’s monitor-

regulations. It is necessary to install point-of-operation guarding devices, such as safety light screens

and/or hard guards, to protect personnel from hazardous machinery. Failure to install point-of-operation

guards on hazardous machinery can result in a dangerous condition which could lead to serious

injury or death.

Interface Modules IM-T-9A and IM-T-11A (the Interface Modules) operate on 24V dc inputs and provide isolated redundant output chan-

nels for interfacing dc safety controls (such as safety light screens or other safety modules) to safety circuits. These modules can also be

used to switch low power capacity of safety controls with low current output rating (see hookup figures and the output configuration speci-

The outputs of the Interface Module will follow the action of the safety outputs from the primary safety device which control it, within a 20

The user is responsible for satisfying all local, state, and national laws, rules, codes, and regulations relating to the use of this

product and its application. Banner Engineering Corp. has made every effort to provide complete application, installation, operation, and

maintenance instructions. Please direct any questions regarding the use or installation of this product to the factory applications depart-

ment at the telephone numbers or address found at http://www.bannerengineering.com.

The user is responsible for making sure that all machine operators, maintenance personnel, electricians, and supervisors are thorough-

ly familiar with and understand all instructions regarding the installation, maintenance, and use of this product, and with the machinery it

controls. The user and any personnel involved with the installation and use of this product must be thoroughly familiar with all applicable

standards, some of which are listed within the specifications. Banner Engineering Corp. makes no claim regarding a specific recommen-

dation of any organization, the accuracy or effectiveness of any information provided, or the appropriateness of the provided information

for a specific application.

Contact: Safety Director, AMT – The Association for Manufacturing Technology, 7901 Westpark Drive, McLean, VA 22102, Tel.:

ANSI NFPA 79 Electrical Standard for Industrial Machinery

Contact: National Fire Protection Association, 1 Batterymarch Park, P.O. Box 9101, Quincy, MA 02269-9101, Tel.: 800-344-3555

ANSI/RIA R15.06 Safety Requirements for Industrial Robots and Robot Systems

Contact: Robotic Industries Association, 900 Victors Way, P.O. Box 3724, Ann Arbor, MI 48106, Tel.: 734-994-6088

Applicable International Standards

ISO 12100-1 & -2 (EN 292-1 & -2) Safety of Machinery – Basic Concepts, General Principles for Design

IEC 60204-1 Electrical Equipment of Machines Part 1: General Requirements

ISO 13849-1 (EN 954-1) Safety-Related Parts of Control Systems

Figure 1. Interface Module Status Indicators

Primary Safety Device Requirements

Interface Modules IM-T-9A and IM-T-11A are driven by one or two safety output channels of a primary safety device. For higher risk

NOTE: As OSSD solid-state outputs on primary safety devices very often are pulsed, it is possible that the relay coils will produce an

audible buzzing. This relay buzzing does not affect the function of the Interface Module, as long as the pulse width is below 500 μs

(microseconds) and the duty cycle (t1/ t2) is greater than 500.

Final Switching Device (FSD): The component of the machine’s safety-related control system that interrupts the circuit to the machine

primary control element (MPCE) when the output signal switching device (OSSD) goes to the OFF-state.

Output Signal Switching Device (OSSD): The component of the electro-sensitive protective equipment (ESPE) connected to the con-

trol system of the machine which, when the sensing device is actuated during normal operation, responds by going to the OFF-state.

Figure 2. Requirements for pulsed output signals from a primary safety device

external devices (like switches or E-stop buttons) can go undetected and create an unsafe condition. Fail-

ure to properly connect this Interface Module to a primary safety device with a monitoring function could

result in serious injury or death.

Mechanical Installation

The Safety Module must be installed inside an enclosure.

It is not designed for exposed wiring. It is the user’s responsibility to house the Safety Module in an enclosure with NEMA 3 (IEC IP54)

rating, or better. The Safety Module mounts directly to standard 35 mm DIN rail.

Heat Dissipation Considerations. For reliable operation, ensure that the operating specifications are not exceeded. The enclosure must

provide adequate heat dissipation, so that the air closely surrounding the Module does not exceed the maximum operating temperature

stated in the Specifications. Methods to reduce heat build-up include venting, forced airflow (e.g., exhaust fans), adequate enclosure

applicable local standards and codes. Use extreme caution to avoid electrical shock at all times. Seri-

ous bodily injury or death could result.

WARNING: Safety Categories

The level of safety circuit integrity can be greatly impacted by the design and installation of the safety

devices and the means of interfacing of those devices. A risk assessment must be performed to deter-

mine the appropriate safety circuit integrity level or safety category as described by ISO 13849-1

(EN 954-1) to ensure that the expected risk reduction is achieved and that all relevant regulations

and standards are complied with.

CAUTION: When FSD1 switches +24V dc and FSD2 switches 0V dc (Figures 4 and 5), a short circuit

between the wires leading to S1, S2, S3 and S4 is detected immediately and K1 and K2 de-energize.

It is not possible to give exact wiring instructions for a Safety Module that interfaces to a multitude of machine control configurations. The

following guidelines are general in nature.

The inputs can be connected to (that meet the requirements for primary safety device above):

device with two current-sourcing safety outputs and two mon-

itoring inputs.

Figure 6. Generalized hookup to a 2-channel primary safety

device with two current-sourcing safety outputs and one mon-

itoring input.

Although this hookup shows model IM-T-9A, the hookup for model

IM-T-11A is identical.

Although this hookup shows model IM-T-9A, the hookup for model

IM-T-11A is identical.

WARNING: Use of Arc Suppressors

If arc suppressors are used, they MUST be installed as shown across the coils of the Machine Primary

Control Elements (MPCEs). NEVER install suppressors directly across the output contacts of the

of the Safety Device or Module. It is possible for suppressors to fail as a short circuit. If installed directly

across the output contacts, a short-circuited suppressor will create an unsafe condition which could

result in serious injury or death.

Figure 7. Generalized hookup to a primary safety device with

one redundant relay safety output (one-channel control) and

one monitoring input.

to eliminate or minimize the possibility of failures and faults that could result in the loss of the safety function(s). Methods to eliminate or

minimize the possibility of these failures include, but are not limited to:

which stops the machinery being controlled by immediately removing electrical power from the machine and (when necessary) by apply-

ing braking to dangerous motion.

ly closed monitor contact from each Machine Primary Control Element as shown in the appropriate hookup drawing.

In operation, if one of the switching contacts of either MPCE fails in the energized condition, the associated monitor contact will remain

open. Therefore, it will not be possible to reset the Primary Safety Device. If no MPCE-monitor contacts are monitored, it is the user's

responsibility to ensure that any single failure will not result in a hazardous condition and will prevent a successive machine cycle.

Overvoltage Category II and III Installations (EN 50178 and IEC 60664-1)

The Safety Module is rated for Overvoltage Category III when voltages of 1V to 150V ac/dc are applied to the output relay contacts. It is

rated for Overvoltage Category II when voltages of 151V to 250V ac/dc are applied to the output relay contacts and no additional precau-

tions are taken to attenuate possible overvoltage situations in the supply voltage. The Module can be used in an Overvoltage Category III

environment (with voltages of 151V to 250V ac/dc) if care is taken either to reduce the level of electrical disturbances seen by the Module

to Overvoltage Category II levels by installing surge suppressor devices (e.g., arc suppressors), or to install extra external insulation in

an MPCE may be one of several control types, including a wide variety of contactors and electromechanical valves. If your machine

documentation leaves any doubt about the proper connection points for the Interface Module output contacts, do not make any connec-

Do not attempt any repairs to the Module. It contains no field-replaceable components. Return it to the factory for warranty repair

or replacement by contacting Banner Factory Application Engineering. They will attempt to troubleshoot the system from your description

linked) relays, K1-K2. The normally closed contact

31-32 is a parallel connection of contacts from K1-K2.

AgNi, 5 μm gold-plated

Low Current Rating

The 5 μm gold-plated contacts allow the switching of

low current/low voltage. In these lowpower applica-

tions, multiple contacts can also be switched in series

(e.g., “dry switching”). To preserve the gold plating on

20,000,000 operations

Max. voltage: 60V

Min. current: 5 mA ac/dc

Max. current: 300 mA

Min. power: 5 mW (5 mVA)

Max. power: 7 W (7 VA)