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MM-TA-12B Muting Module
Instruction Manual
Mute Lamp
(Indicator)
Brown
+
–
White
1
2
5
Auxiliary Load
4
3
Blue
(e.g. PLC input,
–
relay coil,
+
indicator, etc.)
Black
Mute lamp output, pin 2, and
AUX output, pin 4
(see Section 3.4)
Figure 3-8. Mute lamp connections
Brown
White
1
2
5
4
3
Blue
Black
Override #1, pin 4, and
Override #2, pin 2
(see Section 3.4)
Figure 3-9. Override switch hookup
WARNING . . .
Limit Use of
Override Function
The Override function is not for
machine setup or production; it is
to be used only to clear the pri-
mary safeguard if material
becomes "stuck," preventing its
reset. When Override is used, it is
the user's responsibility to install
and use it according to current
standards. In addition, the require-
ments listed in standards NFPA79
(Section 9.15) and IEC60204
(Section 9.2.4) must be satisfied.
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3.5.3 Mute Lamp Output (ML) & Auxiliary PNP Output (AUX)
The Module provides connection terminals for the Mute Lamp (ML) output and
an Auxiliary PNP output (AUX).
Mute Lamp Output (ML)
The Mute Lamp output provides for the visible indication that the safety device's
safeguarding function is muted. This indication must be readily observable.
Failure of this indication should be detectable and prevent the safeguard from
being muted, or the operation of the indicator should be verified at suitable inter-
vals (see Section 1.13).
The Module can be configured for a monitored or non-monitored mute lamp (see
Figure 3-2). If the installation is governed by European (CE) regulations, the mute
lamp must be monitored (SW2 = OFF, banks A and B). This output may also be
used as an input to control logic (e.g., a PLC) if "non-monitored" is selected
(SW2 = ON, banks A and B). The current draw of the mute lamp must not exceed
360 mA.
Auxiliary PNP Output (AUX)
A non-safety-related PNP output is available at pin number 4 of the ML/AUX con-
nector. This monitoring output is for light-duty, non-safety-related control func-
tions, such as an input to a programmable logic controller (PLC). This output fol-
lows the OSSD outputs and the Green status LED (see Figure 1-2). Maximum
current draw of the AUX output is 250 mA.
3.5.4 Override Switch Hookup
The Module provides connection terminals for the Override switches
(see Figure 3-9). See Section 1.16 and the warning at left before connecting
switches.
3.5.5 USSI and MSSI Hookups
The Universal Safety Stop Interface (USSI) provides for easy integration of safe-
guards. This interface consists of two input channels (A & B), which are compati-
ble with Banner Engineering safety devices that have solid-state OSSD outputs
(with "handshake" verification), such as the EZ-SCREEN systems. USSI is also
compatible with devices that have normally open hard contacts or relay outputs
(voltage-free).
The Muteable Safety Stop Interface (MSSI) input is a specialized USSI that can
be muted during the non-hazardous portion of the machine cycle and provides
+24V dc supply power to the primary safety device that is to be muted.
The input channels (A & B) must meet a simultaneity requirement of 3.0 seconds
upon closing and opening. A mismatch of more than 3.0 seconds will result in a
lockout. A lockout that is due to a failure to meet simultaneity requirements can
only be cleared by cycling the MSSI (or the USSI, depending on which failed)
with simultaneity being met, and when the Module is configured for Manual
Reset, then performing a reset routine.
The MSSI and the USSI can be interfaced with safety interlocking switches, E-
stop buttons, rope/cable pull devices, and other machine control devices. To be
interfaced with a safety mat, a safety mat controller must be connected between
the mat and the interface.
System Installation
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