This whole situation was funny, in hindsight. I guess the clues were there all along, but my very rusty electrical background let me down. Any hoo, I learned alot and am now posting a blog for the timers - what I've learnt, and my problems - and whose solutions I used to find mine. It started...
PROBLEM SOLVED! The timer circuit was too much for the circuit the coil was on. isolating them from the contactor circuit did the deed. Thanks to all who participated in this thread, couldn't have done it without you. Will be posting photos of this rather grungy installation in short order...
Mario
Thanks to Jraef and waross for the humbling lesson in Motor control. I should have known that y / delta wouldn't give me two distinct speeds. Digging up old notebooks now. Will confirm (or not) waross's hypothesis tomorrow as I am going to have a talk with AMF. I also found out that a switch in...
Waross,
Thank you for your patience! The motor is wired wye delta so it can achieve two speeds, ie lo and hi. I think it delivers constant torque on both windings, but I'm not sure. I think the start:delta starter you are refering to is a means to get the motor from rest using the wye coil - and...
First thanks to all who have replied to this thread!
Seeing that I got no help a couple of weeks ago when I posted in the PLC forum and the MechE forum this is like a breath of fresh air.
OK. The timers are CX312A6's (Eagle) and they are rated at 50 /60 hz. After reading Jraef's post I...
OK, ScottyUK, I hear you, and I've been reading some of your most informative posts. The problem is that when I connect straight to coil without the panel, and just use the pushbutton / toggle switch setup I get no chatter, and it runs quite well. So it is a control issue, I just don't see how...
Hi, I'm a newbie (Mechanical Engineer). I have been trying to install a set of CX312A6 Eagle timers on a wye delta 100 hp mixer motor. I've basically ironed out the control side, but when I apply juice, I get contactor chatter from both circuits on the Cutler - Hammer switchgear (I dunno the...
I solved the keypad lockout problem...turned out the the contact pad that the membrane switches connect to had shifted due to shipping it seems. Once I opened up the units, wiped the pads they were fine. My problem now is they seem to not be able to do what they are supposed to, and the manual...
Hi, my name is Mario James, and I'm a mechanical engineer. I've got two Eagle Timers (CX312A6) that I bought thinking they were new (great external condition) but were actually made in 1987. I need to time a mixer process (bakery). Mixer is wired delta wye, so I have a pair of timers. My problem...
I solved the keypad lockout problem...turned out the the contact pad that the membrane switches connect to had shifted due to shipping it seems. Once I opened up the units, wiped the pads they were fine. My problem now is they seem to not be able to do what they are supposed to, and the manual...
I solved the keypad lockout problem...turned out the the contact pad that the membrane switches connect to had shifted due to shipping it seems. Once I opened up the units, wiped the pads they were fine. My problem now is they seem to not be able to do what they are supposed to, and the manual...
Hi, my name is Mario James, and I'm a mechanical engineer. I've got two Eagle Timers (CX312A6) that I bought thinking they were new (great external condition) but were actually made in 1987. I need to time a mixer process (bakery). Mixer is wired delta wye, so I have a pair of timers. My problem...
