I've had three control techs from the same company on this and it still isn't working. First one told me Belimo was bad. Well it wasn't the week before as I checked with a signal generator, and 24 volt source. Somehow he cooked it. Second one said there was nothing wrong. Third one diagnosed bad ZN551 controller, and replaced same. Well it still doesn't work. How do I wire the Belimo TR24-SR300 US Actuator to the ZN551? BTW I know how the Actuator works, but don't know how the ZN works.
Black is Common, Red is Hot (24V) White is 2-10 vdc The 24 volt is from a remote power cabinet. I believe the 24 is DC. Just need to know where to land the wires. I'll check with my Fluke, to make sure it is right. As it is now Black and White are wired up, Red is dead headed??
The Trane isn't anything like the ZN, we have them in another building. The Actuators are hot all the time, to drive them you short common to ground.
These A. L. guys don't want to talk to you, and my work makes me drop a ladder and run.
Black is Common, Red is Hot (24V) White is 2-10 vdc The 24 volt is from a remote power cabinet. I believe the 24 is DC. Just need to know where to land the wires. I'll check with my Fluke, to make sure it is right. As it is now Black and White are wired up, Red is dead headed??
The Trane isn't anything like the ZN, we have them in another building. The Actuators are hot all the time, to drive them you short common to ground.
These A. L. guys don't want to talk to you, and my work makes me drop a ladder and run.
You need a floating point actuator for the ZN551. the 2-10 volt actuator will not work unless you install an interface board. the easiest way is to install the floating point actuator.
Is this Automated Logic? If so the ZN551 has an analog 0-10 output. The analog output can be configured for 0-10 or 2-10 in the point properties. That automatically translates whatever scaling range is used in the logic, usually 0-100%, to whatever DC volts the actuator needs. Wiring on the valve is here:
Is this Automated Logic? If so the ZN551 has an analog 0-10 output. The analog output can be configured for 0-10 or 2-10 in the point properties. That automatically translates whatever scaling range is used in the logic, usually 0-100%, to whatever DC volts the actuator needs. Wiring on the valve is here:
Try running your 24+ (red) and common (blk) to the same 24+ and common that sources the ZN551. To MaxBurn's point, the ZN551 should be able to send you a linear Vdc to drive the TR.
If it is a Trane VV 551, then you need a TR-24-3, floating point.
If it's the automated logic ZN 551, I'm not sure. Others have stated 0-10. But really, 24v for the actuator power, a signal and a ground.
Pretty basic stuff to troubleshoot, I have had a call back where the wire had cut through on some radiator fins and would intermittently open. So that might be an issue also. Ohm the wire, check power, signal, and response. not much more I can think of.
I think I got it, I'll lock at 0 and 100% and see what signal point I have. May have to take my magnifying glass to read the writing on the board. LOL Only problem is that the limited workstation I can access is a mile away. I have no access to the workstation in that building. I have six radiators and none of them work right, I have to manually open the valve or manually close it. Also I'm wondering if the fan forced radiators have the same control board, which all work correctly.
I think I got it, I'll lock at 0 and 100% and see what signal point I have. May have to take my magnifying glass to read the writing on the board. LOL Only problem is that the limited workstation I can access is a mile away. I have no access to the workstation in that building. I have six radiators and none of them work right, I have to manually open the valve or manually close it. Also I'm wondering if the fan forced radiators have the same control board, which all work correctly.
This annoys me, you've spent a lot of money for a tool you can't half use. There's no technical reason you can't be right next to the valve commanding it from your phone. It can be done securely too.
Boss told me not to touch it. Had me take pictures of the board with wire locations. Also the Tech. didn't fix the other problems in the programming. I printed pictures of the graphics, and the pictures, attached them to my service request. Turned them into my boss.