H
HarryHydro
- Jan 1, 1970
- 0
Hi Folks:
I'm hunting for a solution to this problem. I have a 13.2V battery
(charging) in a safe area. This goes through a custom barrier (ISCOM)
to a computer in a hazardous area. There is a new intrinsically safe
solenoid in the hazardous area, but it needs about 10V at 30mA to
switch. The added current would blow the ISCOM, which already doesn't
have the voltage the solenoid needs. The common zener-resistor
barriers I've seen drop too much voltage and we have no 24V that the
active devices require. The best we've come up with so far is 9.6V
that works when the solenoid is warm, but not cold (like today). This
is taking into account the voltage drop in all the wiring as well.
Any ideas apprecieated!
Thanks!
Harry
I'm hunting for a solution to this problem. I have a 13.2V battery
(charging) in a safe area. This goes through a custom barrier (ISCOM)
to a computer in a hazardous area. There is a new intrinsically safe
solenoid in the hazardous area, but it needs about 10V at 30mA to
switch. The added current would blow the ISCOM, which already doesn't
have the voltage the solenoid needs. The common zener-resistor
barriers I've seen drop too much voltage and we have no 24V that the
active devices require. The best we've come up with so far is 9.6V
that works when the solenoid is warm, but not cold (like today). This
is taking into account the voltage drop in all the wiring as well.
Any ideas apprecieated!
Thanks!
Harry