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Technical support / Unexpected voltage level with EXP1616R
« on: July 04, 2005, 02:40:43 AM »
Hello there!
I'm using a T100MD888+ in conjunction with a couple of EXP1616R to switch on air conditioners. 24VAC outputs from various thermostats are fed into the EXP1616Rs and their relays are then used to switch on the fans, heaters, and coolers. The problem that I'm facing is as follow: As soon as I connect the 24VAC outputs from the thermostats into the EXP1616R the voltage levels at the inputs on the EXP1616R immediately become unstable. That is, voltages would drop to around 14VAC where they should be at 24VAC and voltages would rise to around 7VAC where they should be at ground potential. Needless to say, these unexpected voltages are murder on my ladder logics! Any insight anyone can offer on this mystery would be greatly appreciated.
Many thanks in advance.
Todd...
I'm using a T100MD888+ in conjunction with a couple of EXP1616R to switch on air conditioners. 24VAC outputs from various thermostats are fed into the EXP1616Rs and their relays are then used to switch on the fans, heaters, and coolers. The problem that I'm facing is as follow: As soon as I connect the 24VAC outputs from the thermostats into the EXP1616R the voltage levels at the inputs on the EXP1616R immediately become unstable. That is, voltages would drop to around 14VAC where they should be at 24VAC and voltages would rise to around 7VAC where they should be at ground potential. Needless to say, these unexpected voltages are murder on my ladder logics! Any insight anyone can offer on this mystery would be greatly appreciated.
Many thanks in advance.
Todd...