Bubby4j
Active Member
I have a Pathway 1004 eDIN Demultiplexer (Rev 2) that either seems defective, or is set up incorrrectly.
The problem: In test mode (or normal DMX mode) it drives the output from 0-0.5v instead of 0-10v, I can't seem to get it to go to the full 10v.
It's being used to control 0-10v electronic fluorescent ballasts via DMX. This is a "sinking" application (confirmed since powering off the 1004 board results in the ballasts going to full and providing 10v).
I read the manual and everything is configured correctly as far as I can tell.
8 output channels from the board each have have 7 fixtures on it, and each fixture has 4 ballasts. I assume they're all wired in parallel. This has me slightly worried since if each ballast has a sinking current of 2ma, then total each channel would need to sink 56ma, more than the maximum of 30ma per channel. I don't necessarily know that the ballasts require 2ma each, but I can't seem to find specs about that (Advance Mark 7 izt-2t42-m3-ld). If it was just 1ma then I'd be good. I suppose I could measure this with a meter to be sure. Update: Found the correct datasheet - each ballast is 0.5ma sinking, so this shouldn't be a problem.
I have the DMX address set correctly, mode set to 1 (0-10v control), min set to 0, and max set to 158.
The diode shunts are enabled/on (manual: "With the shunts in the “on” position, the diodes are by-passed. This is the correct arrangement for sinking control of EFBCs [electronic flourescent ballast controls] and LED dimmers.")
The only thing I don't think I've tried is mode 8 - meant for EFBC control, but as far as I can tell from the manual it just sets output channels 9-16 as relays. I'll try this later today.
As far as the control wiring the gray (common/-) wires are ganged 2 up on the common terminals of the board (since there are 8 common wires but only 4 common connections), and then each purple (+) wire is connected to each channel. Could the common wires not being connected to the same block as the corresponding purple wires cause an issue? Here's a picture (click for full size):
Any ideas? This hasn't been working properly for as long as I can remember, and I don't know if it ever worked properly. I can't see the back of the board to visually inspect for any damage - I was worried about snapping the board when trying to take it out of the plastic case (I was able to remove it from the DIN rail, is there a correct way to remove the board from the case?).
The problem: In test mode (or normal DMX mode) it drives the output from 0-0.5v instead of 0-10v, I can't seem to get it to go to the full 10v.
It's being used to control 0-10v electronic fluorescent ballasts via DMX. This is a "sinking" application (confirmed since powering off the 1004 board results in the ballasts going to full and providing 10v).
I read the manual and everything is configured correctly as far as I can tell.
8 output channels from the board each have have 7 fixtures on it, and each fixture has 4 ballasts. I assume they're all wired in parallel. This has me slightly worried since if each ballast has a sinking current of 2ma, then total each channel would need to sink 56ma, more than the maximum of 30ma per channel. I don't necessarily know that the ballasts require 2ma each, but I can't seem to find specs about that (Advance Mark 7 izt-2t42-m3-ld). If it was just 1ma then I'd be good. I suppose I could measure this with a meter to be sure. Update: Found the correct datasheet - each ballast is 0.5ma sinking, so this shouldn't be a problem.
I have the DMX address set correctly, mode set to 1 (0-10v control), min set to 0, and max set to 158.
The diode shunts are enabled/on (manual: "With the shunts in the “on” position, the diodes are by-passed. This is the correct arrangement for sinking control of EFBCs [electronic flourescent ballast controls] and LED dimmers.")
The only thing I don't think I've tried is mode 8 - meant for EFBC control, but as far as I can tell from the manual it just sets output channels 9-16 as relays. I'll try this later today.
As far as the control wiring the gray (common/-) wires are ganged 2 up on the common terminals of the board (since there are 8 common wires but only 4 common connections), and then each purple (+) wire is connected to each channel. Could the common wires not being connected to the same block as the corresponding purple wires cause an issue? Here's a picture (click for full size):
Any ideas? This hasn't been working properly for as long as I can remember, and I don't know if it ever worked properly. I can't see the back of the board to visually inspect for any damage - I was worried about snapping the board when trying to take it out of the plastic case (I was able to remove it from the DIN rail, is there a correct way to remove the board from the case?).
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