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What exactly is the Trane comm 4 protocol...RS-485? Is there an extender or repeater for this comm link that anyone's used successfully. I see various RS-485 repeaters by different vendors. I don't...

You are right and that in essence is the source of the problem. The slide will not respond when it needs to.To current limit, evap conditions, etc. At least thats what the guys at Pueblo are telling...

Flows are solid at 1100 to 1200 gpm, condenser water constant at 78 deg. I'm working with Trane Pueblo presently. Thay are aware of the problem and have been working on a revised control program to...

usually, but sometimes later.

which trip points specifically?

Some additional info. 26% glycol, evap pressure 20 psi, evap approach 2.8 deg, evap flow 1100 gpm.

These units are brand new installed in August , put into operation in Sept.

All 3 units run in ice mode. For conventional mode the units are equipped with both evaporator and condenser isolation valves.

These are RTHD's. Now Running condenser at 75 deg. Let me take a look at these other items in your post and I'll get back to you.

Will do. Will post more info after tomorrow. Thanks for the help!

Oh, by the way this job is in Honolulu. The trips happen well into the operating period usually.

I start tomorrow, but one thing I do know is that they let the condenser water temp drift down with the ambient outside temp plus cooling tower at night when in ice making mode. This results in cond...

Am about to begin investigating chronic low evaporator pressure trips in 3 Trane Series R's (parallel) used for Calmac Ice Storage system. All 3 trip intermittently. Any ideas anyone. Possible...

The printer port wont work.Its has to be a serial port. I've also used a usb to serial converter. Then you have to match the correct Baud rate usually 1200. Trial and error will usually find it. I...

The Trane Mp580/581 would be a huge expense for only 6 binary outputs and still very large even in the frame mount version. I might as well go back to Trane TCM's.

I guess it would be an open solution as it would be part of a Tracer Summit system on their comm 5 network(lontalk). The lighting contactors I'm controlling usually number 12 to 36 per group. The...

I did check there. A lot of good stuff but not exactly what I'm after. I need high density binary outputs in a small package for lighting control. Maintained contacts or triacs driving IDEC pilot...

I'm looking for a Lonworks I/O device to use with Tracer Summit. I need something thats 24vac powered with as many binary outputs as possible(relay or triac). The smaller the size the better. A few...