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E-Stop Safety Relay 

– Model ES-TA-3D1

Fault Type

Cause

Recommended Action

E-stop input fault

1 input shorted, 1 input open

Check E-stop inputs
Replace Power Supply PC board
Replace Communication PC board
Replace Interconnection PC board

Reset input fault

Shorted input on power up

Check Reset input
Replace Power Supply PC board
Replace Communication PC board

Monitor input
fault

Open input on power-up
or after stop

Check for open Monitor inputs
Replace Power Supply PC board
Replace Communication PC board

Output relay fault

Internal circuit failure

Replace Relay PC board
Replace Communication PC board

Power fault

No power or power supply
failure

Check power, LED working?
Replace Relay PC board
Replace Communication PC board

Auto Reset fault

Missing selector card or
Internal circuit failure

Check missing Auto Reset selector card
Replace Power Supply PC board
Replace Communication PC board

The ES-TA-3D1 E-Stop Safety Relay also features a self-contained provision for
troubleshooting; indicator LEDs on the front of the module provide clues to possible
faults. If the circuit is working properly, the Power LED should be ON, and the individual
indicator lights for each Emergency Stop switch input should remain ON. 

If one of the Emergency Stop switches connected to the circuit has been activated, its
indicator on the front panel of the module will go OFF; in addition, each indicator to
the right of it, on the panel, will also go OFF. (For example, if switch #4 has been
activated, the indicators for switches 4, 5, and 6 will be OFF). 

To reset, start by verifying that the problem prompting the E-stop procedure has been
corrected. The E-stop switch indicator, and all those to the right of it on the control
module front panel, should go ON. Then activate the Reset switch connected to the 
ES-TA-3D1 E-Stop Safety Relay, and reset the E-stop switch indicated by the first LED
to be OFF, reading from left to right on the control panel. (For example, if switch #4
has been activated, the indicators for switches 4, 5, and 6 will be OFF; start by
resetting switch #4.) Verify that all monitor indicators are ON. (If one of the monitor
inputs is open, its indicator will go OFF; in addition, each monitor indicator to the
right of it will also go OFF. For example, if monitor 2 is open, the indicators for
monitor 2, 3 and 4 will be OFF.)

If any of the E-stop switch indicators remain OFF, repeat this step with the next E-stop
switch indicator (again, the first/left-most unlit LED on the front of the module 
control panel).

NOTE: After a successful reset, both of the K1/K2 indicators should be ON. If not, the

control module has an internal fault and should be returned to the factory for repair. 

SECTION 6 — Troubleshooting

Use indicator LEDs on E-stop relay to diagnose fault type (see Section 5.3). Use your
DeviceNet Manager as a troubleshooting aid. Also, see the most current Electronic
Data Sheet (EDS) file; it assigns a number to a specific text string that will be helpful
in troubleshooting problems.

6.1  General E-stop Relay Faults

Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]

Summary of Contents for ES-TA-3D1

Page 1: ...its for a contact failure or wiring fault Diverse redundant input monitoring circuit DeviceNet monitoring of status and diagnostic information Auto reset or monitored manual reset Two output switching...

Page 2: ...y relay in any particular application are satisfied Extreme care is urged that all legal requirements have been met and that all installation and maintenance instructions contained in this manual are...

Page 3: ...ents The Emergency Stop switches become the inputs to the safety relay The safety relay monitors the condition of both contacts of each Emergency Stop switch connected to it The output of the safety r...

Page 4: ...on such as twisting pulling unlocking etc Additionally NFPA79 section 13 2 Emergency Stop Devices specifies the following switch stop control requirements Emergency stop pushbuttons shall be located a...

Page 5: ...hardware Leave a minimum 1 cm 1 4 gap between the module housing and other adjacent housings to allow room for potential board replacement at a later date The ES TA 3D1 E Stop Safety Relay control mo...

Page 6: ...witch The circuit Reset switch can be any mechanical switch such as a normally open momentary switch a two position key switch etc The Reset switch must meet the requirements listed in the Product Spe...

Page 7: ...R install suppressors directly across the output contacts of the ES TA 3D1 safety relay It is possible for suppressors to fail as a short circuit If installed directly across the output contacts of th...

Page 8: ...ches are above 63 and the current address of the ES TA 3D1 as recognized by the DeviceNet controller was set with the MAC ID address rotary switches above 63 4 4 Selecting Auto or Manual Reset Mode Th...

Page 9: ...ON If Auto Manual Reset selector is set to Auto mode verify K1 K2 and all E stop indicators are ON Reset and all monitor indicators are OFF 4 Close the Reset input if Auto Manual Reset selector is se...

Page 10: ...Safety Relay should be mounted inside a lockable enclosure For security reasons the key to the lockable enclosure must be in the possession of a Qualified Person or Persons A Qualified Person is a per...

Page 11: ...action is not necessary The machine must not start at this point Initiate the machine startup procedure per manufacturer s instructions Verify that the machine restarts in correct sequence 3 Repeat t...

Page 12: ...mple 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...

Page 13: ...F For example if switch 4 has been activated the indicators for switches 4 5 and 6 will be OFF To reset start by verifying that the problem prompting the E stop procedure has been corrected The E stop...

Page 14: ...DeviceNet network is properly terminated and grounded per DeviceNet specifications 4 Check for insufficient network power supply Red Flashing Connection timeout or no power to ES TA 3D1 1 Check input...

Page 15: ...rying the cover open Figure 11 The cover is not hinged it will come completely off 3 Gently push the sides of the module housing outward at the top corners to dislodge the four locking tabs on the two...

Page 16: ...to fully engage the tabs into their slots 4 Remount the module and replace the wiring barriers by pushing them down into their receptacles Take care to match the terminal labels on the wiring barriers...

Page 17: ...Specifications Bus Status Indicator A bi colored red green LED visible on the control module indicates network status Green Steady On line connected allocated to master Flashing On line not connected...

Page 18: ...ion size of 0 bytes Assembly instance 2 is used as the response data for the COS command A COS command is issued in response to a change in the E stop relay operating mode Produced connection size of...

Page 19: ...input is known 1 The status of the reset input is unknown disabled Reset Input 0 The reset input is open 1 The reset input is closed K1 Relay Invalid 0 The state of the K1 relay is known 1 The state o...

Page 20: ...life 100 000 at full resistive load NOTE Transient suppression is recommended when switching inductive loads Install suppressors across load Never install suppressors across output contacts see Warni...

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