7501T8

Model 7501T8 is a solid-state relay (SSR) rack that accommodates up to eight G4 type SSR modules. It has a 50-pin header which is compatible with several Sensoray GPIO products, including models 826 and 2410.

Pinout

SSR	Header Pin	Terminal Block Pins	Model 826 J3 GPIO	Model 826 J4 GPIO	Model 2410 GPIO
0	47	1-2	0	24	17
1	45	3-4	1	25	19
2	43	5-6	2	26	21
3	41	7-8	3	27	23
4	39	9-10	4	28	9
5	37	11-12	5	29	11
6	35	13-14	6	30	13
7	33	15-16	7	31	15

Using with model 826

The relay rack can be connected to header J3 or J2 on the 826 board.

You must supply 5 VDC power to the relay rack. This can be done in either of the following ways:

• Connect an external 5 VDC power source to the relay rack's +5V and GND terminals.
• Attach a wire on the bottom of the relay rack (via solder) from the +5V terminal to J1 pin 49.

SSR	Model 826 J3 GPIO	Model 826 J4 GPIO
0	0	24
1	1	25
2	2	26
3	3	27
4	4	28
5	5	29
6	6	30
7	7	31