Specification - Renishaw RP2 Anleitung

The MI 8 interface unit processes probe signals and converts these signals into a voltage-free solid state relay
(SSR) output, for transmission to the CNC machine control. The MI 8 is fully described in the MI 8 user's guide,
Part No. H-2000-5015.
Information given here will assist the user when making electrical connections. It is recommended that the
MI 8 is installed within the CNC machine control cabinet. A variant of the MI 8 is also available for DIN rail
mounting.
Supply voltage
Supply voltage
(with ripple)
Supply current
Supply protection
Probe input
MI 8 output
Inhibit input
Remote LED
(Optional)
Temperature
MI 8 INTERFACE UNIT

SPECIFICATION

15 V to 30 Vdc maximum.
16.5 V to 28.5 Vdc with 3 V peak-to-peak ripple at 100 Hz.
50 mA nominal.
80 mA (T) anti-surge fuse (F1).
Normally closed. Open for trigger.
Voltage-free – solid state relay (SSR)
Normally open (N/O) or normally closed (N/C). Selected by switch SW1.
Maximum current 50 mA peak.
Maximum voltage ±50 V peak.
Shorting terminals B1 and B2 (less than 100 Ohms) will force the output into the
seated state, irrespective of actual probe status. Breaking contact between
terminals B1 and B2 (more than 50 k Ohms) will remove the inhibit function.
Nominal current of 10 mA. Connection is between terminals B3 and B4.
(Locate remote LED in a position where it is easily seen by the machine operator).
Storage -10 °C to +70 °C (14 °F to 158 °F).
Operating 5 °C to 50 °C (41 °F to 122 °F).
1-9