System Installation
MM-TA-12B Muting Module
Instruction Manual
3.7.2 External Device Monitoring (EDM) Hookup
The Machine Interface connector provides connection terminals for the External
Device Monitoring input (EDM #1 and EDM #2). External Device Monitoring
(EDM) must be wired in one of three configurations:
•
One-Channel Monitoring
— SW4 Bank A&B = OFF, SW5 Bank A&B = OFF
(see Figure 3-19). NOTE: EDM #2 input must be left open.
•
Two-Channel Monitoring
— SW4 Bank A&B = OFF, SW5 Bank A&B = ON
(see Figures 3-17, 3-18)
•
No Monitoring
— SW4 Bank A&B = ON, SW5 Bank A&B = ON or OFF
NOTE: EDM #1 and EDM #2 inputs must be left open.
After the initial checkout has been successfully completed, the EDM configuration
that disabled the monitoring function must be properly reconfigured. The External
Device Monitoring inputs then must be properly connected to the closed monitor-
ing contacts of the MPCEs (see Section 1.10). Refer to the NOTICE Regarding
MPCE Monitoring Hookup, at left, and Figures 3-17, 3-18 and 3-19.
3.7.3 OSSD Output Connections
Both the output signal switching device (OSSD) outputs must be connected to
the machine control such that the machine’s safety related control system inter-
rupts the circuit or power to the machine primary control element(s) (MPCE),
resulting in a non-hazardous condition.
Final switching devices (FSDs) typically accomplish this when the OSSDs go to
an OFF state. See Figure 3-17.
Refer to the output specifications (Section 2) and Warnings at left before making
OSSD connections and interfacing the MM-TA-12B Muting Module to the
machine.
6
5
4
3
8
7
1
2
6
5
4
3
8
7
1
2
24V dc
24V dc
– OR –
0V dc
Male Face View
(8-Pin Mini-Style)
Machine Control
Male Face View
(8-Pin Mini-Style)
Optional Hookup
Sensor or PLC
Semiconductor
PNP Output
Blue
Violet
Brown
Blue
0V dc
Violet
Brown
+24V dc
Figure 3-16. Mute Enable hookup
WARNING . . .
OSSD Interfacing
To ensure proper oper-
ation, the MM-TA-12B output
parameters and machine input
parameters must be considered
when interfacing the solid-state
OSSD outputs to the machine
inputs.
Machine control circuitry must be
designed so that the maximum
load resistance value is not
exceeded and so that the maxi-
mum specified OSSD OFF-state
voltage does not result in an ON
condition.
Failure to properly interface the
OSSD outputs to the guarded
machine could result in serious
bodily injury or death.
CAUTION . . .
EDM Configuration
If the application does
not require this function, the EDM#1
and EDM#2 inputs must be left open
and "EDM Disable = ON" must be
configured (see Section 3.2.2). It is
the user’s responsibility to ensure
that this does not create a hazardous
situation.
NOTICE Regarding External
Device Monitoring Hookup
It is strongly recommended that
one normally closed, forced-guid-
ed, monitoring contact of each
MPCE or external device be wired
in order to monitor the state of the
MPCEs (as shown in Figures 3-17
to 3-19). If this is done, proper
operation of the MPCEs will be ver-
ified. MPCE monitoring contacts
must be used in order to maintain
control reliability.
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