E-Stop Safety Relay
– Model ES-TA-3D1
5.3.2 STOP Condition
If any E-stop switch is actuated during a normal run condition, the output contacts of
K1 and K2 will open. The following LED status illustrates a situation where E-stop
switch ES3 has been actuated:
ES4
A
B
ES3
A
B
ES2
A
B
ES1
24V
DC
+
PWR
A
B
ES5
A
B
ES6
RESET
A
B
MONITOR
1
2
3
K1
K2
4
Indicator Key
Indicator "ON"
Indicator "OFF"
Figure 8. Indicator status for STOP condition (E-stop switch ES3 is actuated)
ES4
A
B
ES3
A
B
ES2
A
B
ES1
24V
DC
+
PWR
A
B
ES5
A
B
ES6
RESET
A
B
MONITOR
1
2
3
K1
K2
4
Indicator Key
Indicator "ON"
Indicator "OFF"
Figure 9. Typical indicator status for FAULT condition (contact “B” of E-stop switch
ES4 remains closed upon actuation)
Operating mode: Stop Condition
E-stop Inputs:
E-Stop 3 Open
Monitor Inputs:
All Closed
Reset Mode:
Manual Reset
(or Auto Reset,
depending on selection)
Reset Input:
Open (or Disabled if in
Auto Reset mode)
K1 Relay:
De-energized
K2 Relay:
De-energized
Autobaud:
On (or Off, depending on
selection)
Fault Type:
No Fault
Action 1:
- - - - - -
Action 2:
- - - - - -
Action 3:
- - - - - -
When the E-stop switch is reset, (ES3 in this example), the indicator lights for ES3,
ES4, ES5, and ES6 will come back ON.
K1 and K2 will close and their LED indicators will come ON:
1) After the Reset switch is closed and then opened (Manual Reset mode) or,
2) Immediately upon resetting ES3 (Auto Reset mode).
5.3.3 FAULT Condition
The following status indication illustrates a typical fault condition in which one switch
contact remains closed when an E-stop switch is actuated. This example illustrates
the situation where contact “B” of switch ES4 fails, closed:
SECTION 7 – Repairs
Board Replacement:
In some cases, it may be possible to repair your module by replacing one or more of
A STOP condition created by actuation of
E-stop switch ES3 is reported to DeviceNet
as follows:
A FAULT condition created by failure of
contact “B” of E-stop switch ES4 is
reported to DeviceNet as follows:
Operating mode: Fault Condition
E-stop Inputs:
4A Open 4B Short
Monitor Inputs:
All Closed
Reset Mode:
Manual Reset
(or Auto Reset,
depending on selection)
Reset Input:
Open (or Disabled if in
Auto Reset mode)
K1 Relay:
De-energized
K2 Relay:
Energized
Autobaud:
On (or Off, depending on
selection)
Fault Type:
E-Stop 4 Fault
Action 1:
Check E-Stop 4
Action 2:
New Relay Board
Action 3:
New Comm. Board
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