CH Tech M222 user manual Appendix a Connectors, Figure A-1. Front Panel I/O Signals

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APPENDIX A: CONNECTORS

MAXIMUM VOLTAGE/CURRENT: The maximum voltage that may be applied to any connector on the M222 is 125 VDC, 141 VAC rms, or 200 VAC peak. These limits apply only if the product is installed in a humidity-controlled (<60% RH) environment where airborne contaminants and transients are controlled, and there is NOT a relay connection made to power mains. If these conditions CANNOT be maintained, then the maximum voltage is 60 VDC, 43 VAC rms or 68 VAC peak.

The maximum current (non-inductive) that may be applied to the M222 is:

Per Switch: 5 ADC, 5 AAC peak, 100W DC, 100VA AC

Per Module: 300W DC, 300VA AC

Pin #	Use	Pin #	Use	Pin#	Use
1	CH0_NC	16	CH0_NC	31	CH0_NC
2	CH0_COM	17	CH0_COM	32	CH0_COM
3	CH0_NO	18	CH0_NO	33	CH0_NO
4	CH1_NC	19	NC	34	CH1_NC
5	CH1_COM	20	CH1_NC	35	CH1_COM
6	CH1_NO	21	CH1_COM	36	CH1_NO
7	NC	22	CH1_NO	37	CHGND
8	CH2_NC	23	CH2_NC	38	CH2_NC
9	CH2_COM	24	CH2_COM	39	CH2_COM
10	CH2_NO	25	CH2_NO	40	CH2_NO
11	CH3_NC	26	NC	41	CH3_NC
12	CH3_COM	27	CH3_NC	42	CH3_COM
13	CH3_NO	28	CH3_COM	43	CH3_NO
14	CHGND	29	CH3_NO	44	CHGND
15	CHGND	30	CHGND

NC = No Connection

Figure A-1. Front Panel I/O Signals

A-1