Banner Interface Modules - Manual (Page 3)

Models SC-IM9.. – Safety Controller Interface Modules
P/N 131845
3
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Primary Safety Device Requirements
These Interface Modules are driven by the safety output channels of the SC22-3 Safety
Controller (model SC-IM9A by two safety output channels, SC-IM9B by four, and SC-IM9C
by six). These Interface Modules must be used only with the SC22-3 Safety Controller and
must be monitored via the Controller's EDM inputs (see Figure 2 and the Warning on page 5).
Refer to the SC22-3 Safety Controller manual (p/n 133487), Section 3.6.1, for more information about
the External Device Monitoring (EDM) function.
NOTE: Because the Safety Controller's output signal switching device (OSSD) solid-state
outputs are pulsed, the Interface Module's relay coils may buzz; this will not affect its
function.
Installation
Mechanical Installation
The SC-IM9.. Interface Modules must be installed inside an enclosure. They are not designed
for exposed wiring. It is the user’s responsibility to house the Interface Modules in an
enclosure with NEMA 3 (IEC IP54) rating or better.
The Interface Modules are pre-wired to a terminal block that plugs into the Controller's safety
outputs. Therefore, the Interface Module must be installed next to the Safety Controller (onto
a 35 mm DIN rail).
Interface Module dimensions are shown in Figure 3.
For reliable operation, do not exceed the operating specifications. Verify that the enclosure
provides adequate heat dissipation, so that the air closely surrounding the Module does not
exceed its maximum operating temperature. Methods to reduce heat build-up include venting,
forced airflow (e.g., exhaust fans), adequate enclosure exterior surface area, and spacing
between modules and other sources of heat. (See Specifications.)
Electrical Installation
As the Interface Modules can interface to a multitude of machine control configurations, it is not
possible to give exact wiring instructions for the output contacts. The following guidelines are general
in nature.
Installation and wiring must be made by qualified personnel and must comply with the NEC (National
Electrical Code), ANSI NFPA79 or IEC 60204-1, and all applicable local standards and codes.
Since the SC-IM9.. can switch high levels of energy, the user must consider and prevent the
possibility of arc flash hazards. Arc flash can release dangerous amounts of heat and blast energy.
When using low-voltage equipment (240V or less) being fed by small transformers (125kVA or less)
the potential hazard is small, but the risk increases with higher voltage or larger transformers. The
SC22-3 and the SC-IM9.. may be required to be located in such a manner that minimizes arc flash
hazards. Refer to ANSI NFPA70E for more information.
Connection to the Machine To Be Controlled
The safety outputs of the Interface Module have no delay function by themselves. They will open
within 3 milliseconds from the time that the Safety Controller’s SO outputs turn OFF.
The hookup diagram in Figure 2 shows a generic connection to the machine primary control elements
(MPCEs) from an SC-IM9C Interface Module. A machine primary control element is an electrically
powered device, external to the interface module, which stops the machinery being controlled by
immediately removing electrical power and (when necessary) applying a braking action. Refer to the
SC22-3 Safety Controller manual (p/n 133487), Section 3.6, for more information.
WARNING . . .
Shock Hazard
Always disconnect all power from the
Interface Module, the Safety Controller, and
the machine being controlled before making
any wire connections. Electrical installation and
wiring must be made by qualified personnel and
must comply with the NEC (National Electrical
Code) and ANSI NFPA70E, ANSI NFPA79 or
IEC 60204-1, and all applicable local standards
and codes.