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System Installation
To ensure Safety Category 4 per ISO 13849 (EN954-1), the USSI provides a"hand-
shake" with Banner Engineering safety devices that have OSSD solid-state outputs.
This handshake verifies that the interface of the two devices is capable of detecting
certain unsafe failures, such as a short-circuit to a secondary source of power or to the
other channel, high input resistance, or loss of signal ground. (See Figure 3-10.)
If OSSDs are to be used without this handshake capability (i.e., non-Banner Safety
devices), interposing safety relays or interfacing modules must be used to provide
hard contacts and be wired as shown in Figure 3-11.
To properly interface hard contacts or relay outputs, each input channel has a corre-
sponding handshake signal. The USSI becomes a four-wire interface to ensure the
detection of unsafe failures, as mentioned above (See Figure 3-11). These contacts
may come from any of a variety of devices, including process control, emergency stop
switches, gate switches, safety mat controls, and safety light screens.
NOTE: If the USSI is not to be used, pin 1 must be jumpered to pin 4, and pin 2 must
be jumpered to pin 3 (factory default). Do not short Channel A to Channel B.
Safeguard with handshake compliant OSSDs
Banner
Safeguarding
Device
MSSI (Guarding System)
+
(7-pin Mini-Style Female Face View)
White
OSSD#2
Gray/Black
not connected
Gray/White
not connected
Brown
+24V dc
Blue
0V dc
Green/Yellow
GND
+
Black
OSSD#1
USSI
1
2
5
4
3
Black
*NOTE: 0V dc must be common between the
two devices. Connection must be
made at pin 6 of the Machine
Interface connector (blue wire).
Figure 3-10. USSI and MSSI interfacing with Banner OSSDs
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: CustomerService@valin.com
6
1
7
5
2
4
3
Banner
Safeguarding
Device
+
White
OSSD#2
0V dc*
+
OSSD#1
Safeguard with relay output
Safeguarding
Device
White
Gray/Black
FSD2
Gray/White
Brown
+24V dc
Blue
0V dc
Green/Yellow
GND
FSD1
Black
Brown
USSI
1
2
5
4
3
Black
Figure 3-11. USSI and MSSI interfacing with hard contacts
MM-TA-12B Muting Module
Instruction Manual
MSSI (Guarding System)
(7-pin Mini-Style Female Face View)
6
1
7
5
2
4
3
Safeguarding
Device
White
FSD2 FSD1
Blue
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