IAI R-unit RSEL, Instruction Manual, Page: 256 / 844

Chapter 4 Unit connection / In
stallation and Wiring
4.7 Brake Box (Option)
4-44
ME0392-4C
(2) Outside release & release signal output connector
Pin 1 and Pin 2 are connectors to release the brake externally. Make Pin 1 and Pin 2
short-circuited and the brake compulsory release can be performed. When a switch is to
be connected to the externally releasing connector, it is necessary to have 30V and
1.5 mA or more for the switch rating.
Pin 3 and Pin 4 are connectors to output the release signal. As inside Pin 3 and Pin 4 is an
open collector connection using a photocoupler, Pin 3 and Pin 4 should be conducted
once the brake voltage is output.
* Pin 3 and Pin 4 are isolated from inside of the brake box with the photocoupler.

Outside release & release signal output connector
Connector name: ML-700-NH-4P (Sato Parts)
Pin No. Signal name Description
1 BKRMT + Brake release input + side
2 BKRMT - Brake release input - side
3 RLS-C Open collector output collector side
4 RLS-E Open collector output emitter side

Connection cable specification
Item Description
Wire Size AWG22 to 28
Standard Strip Length 9 to 10 mm

External view