Safety Interlock Classic
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The Safety Interlock Classic gives you plug and play expansion to integrate bumper switches, pressure mats and outboard limit switches to protect areas with pinch points and crushing hazards, like pivoting walls or hard edge sliders. The Safety Interlock is wired between the machinery and the Stagehand with simple, pluggable connections to interrupt forward or reverse motion.
This manual will guide you through:
Unpacking
Installation
Powering up
Operation
Troubleshooting
In the box you will find:
Reference manual (this document)
Safety Interlock Classic
Two 3-pin XLR jumpers
Two limit jumpers
If any of these parts are missing, please contact us.
If you ordered any bumper switches or pressure mats those items are packaged separately.
The Safety Interlock Classic is a 3U rack mountable device with 4 mounting holes. Check out the features below.
Status indicators
Forward Limit Connections
Reverse Limit Connections
Forward safety sensor connections
Reverse safety sensor connections
Emergency stop input and output
The Safety Interlock Classic is a 3U rack mountable case designed to fit in a standard 19” rack. It is not required to be rack mounted, feel free to place it on the operator desk or with the Stagehand motion controllers.
A key point to note during installation is that the Safety Interlock Classic will need to be connected between the machine and the Stagehand motion controller.
After the Safety Interlock is installed, it is time to power it up and test that the bumper switches, pressure mats, and/or limit switches are working correctly. The Safety Interlock Classic requires 24VDC, provided from the Showstopper Base or Showstopper Hub. The Showstopper cable has 5 pin XLR style connectors (DMX):
Connect a Showstopper Cable from the Showstopper Base to the E-Stop Input. Connect another Showstopper cable from the E-Stop output on the Safety Interlock to the Stagehand.
The Stagehand AC Motion Controller monitors Forward and Reverse limit circuits. In order for the Safety Interlock Classic to interrupt these signals, the Forward and Reverse limits need to feed through the Safety Interlock.
Connect the Forward and Reverse Limits from the Stagehand to the Safety Interlock Classic and then on to the machine with ML-1 extension cables.
The safety interlock adds additional support for 4 wire safety circuits (e.g. bumper switches and pressure mats). A 4 wire safety circuit, when used in conjunction with the safety relay inside the Safety Interlock Classic allows monitoring for the following four conditions:
Disconnected - the safety relay sends out test pulses through the sensor and expects the signal to return. If that signal does not return the safety relay will go into a faulted state and disallow any further motion.
Shorted - if a wire has been crushed by equipment or cut the safety relay will go into a faulted state.
Cross Circuit - if the signals get crossed and the test pulse comes back on the opposite channel the safety relay will go into a faulted state.
Good - if none of the above conditions occur the safety relay will not prohibit any movement.
Once powered up, the Safety Interlock Classic is operational. If all of the connections have been properly made, the entire system is powered up, and none of the sensors or limit switches are activated, the Safety Interlock Classic is actively doing its job. To verify this, the three indicator lights on the face should all be illuminated. Other than connecting or disconnecting any limit switches or sensors, there should be nothing else that needs to be done to the Safety Interlock itself.
When encountering an issue with the Safety Interlock Pro, the first thing to check would be that none of the limits or sensors are activated. If they are not, the next thing to check would be that all of the cables or jumpers are connected properly. If all connections are made properly and none of the sensors or limits are activated it would be best to make sure that none of the cables have been cut or damaged.
The issue that is most often encountered is leaving an open connection. All connections on the back of the interlock need to have a physical cable or a jumper plugged in. Making sure that either the cables or the jumpers are seated properly is also important. It is common to mix up the sensor input and outputs in the forward and reverse direction.
Condition
Remedy
No indicator lights illuminated
Check E-Stop status
Only Power and REV safety sensor indicators illuminated
Confirm no FWD limit is activated
Confirm no FWD sensors activated
Confirm they are plugged into correct direction
Confirm Sensor Jumpers are installed
Only Power and FWD safety sensor indicators illuminated
Confirm no REV limit is activated
Confirm no REV sensors are activated
Confirm they are plugged into correct direction
Confirm Sensor Jumpers are installed
Only Power indicator illuminated
Confirm no limit is activated FWD and REV
Confirm no sensor is activated FWD and REV
Confirm they are plugged in to correct corresponding direction
If you get stuck, we are here to help. The best way to get in touch with a tech expert is via email, even during normal business hours, because most days we are on the shop floor and may not be near the phone. There is someone in the office from 8:30a-5pm EST Monday-Friday, and they will return an email or phone call quickly. After hours, when most tech support issues arise, we have a crack team monitoring email and voicemail who will respond quickly to help get you moving.
Phone: 401-289-2942 x2
Inputs for both Forward and Reverse safety sensors (bumper switches or pressure mats)
Pass through connections for Stagehand Limit Switch signals
Description
Value
Emergency Stop Input
24VDC
Emergency Stop Output
24VDC
Safety sensor (FWD & REV)
24VDC, 130mA max
If you need any help along the way, contact us on our website (creativeconners.com), via email (), or by phone (401-289-2942).
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