Mitsubishi Electric CR750-D Instruction Manual page 58

2Unpacking to installation
<Wiring example 5>: Connect the controller to the safety relay
Use the controller's emergency stop button command as an input to the safety relay.
OP
E-stop
10μF
入力 Input
detection
検知
circuit
回路
10μF
Input
入力
detection
検知
circuit
回路
[Caution]
1) This product has category 3 functionality and therefore the robot's whole unit cannot be set to category 4.
2) The controller's internal circuit has polarity. Please adhere to the polarity as detailed in the wiring examples,
particularly for emergency stop button output when using user equipment. Connect the positive side of the
user equipment (24V DC) to the terminal 2 of CNUSR11/12, then connect the emergency stop button (or
contact points) in the user equipment to across the terminals 3 and 4 of CNUSR11/12, and ultimately con -
nect the negative side (24G).
3) When installing a safety relay to use it as an input point of the controller's emergency stop button command,
use a safety relay that is activated by an input from one of the two systems (i.e. QS90SR2SP (Manufacture:
Mitsubishi Electric Corporation)).
4) The emergency stop input detection relay (internal relay) uses the controller's internal safety relay control.
If the emergency stop input detection relay is switched OFF, emergency stop is detected and the safety
relay is also switched OFF.
5) When connecting emergency stop button output to an external safety relay, please take note of the polarity
and make sure that the electrical current flows in the same direction as indicated by the dotted arrows in the
two places in the diagram. If the polarity is setup incorrectly, this function will not operate correctly. Please
connect the terminal 13 of CNUSR11/12 to 24V.
Fig.2-30 ： Example of safety measures （Wiring example 5）
2-46 Installation
Controller
CNUSR11
TB
E-stop
Internal relay
内部リレー
Safety relay
安全リレー
Emergency stop
非常停止出力
output
CNUSR12
Internal relay
内部リレー
Emergency stop
非常停止出力
output
1
No connection
24V DC
2
External emergency stop switch
外部非常停止スイッチ
3
4
5
6
24G
13
24V DC
14
1
No connection
24V DC
2
External emergency stop
外部非常停止スイッチ
switch
3
4
5
6
24G
13
24V DC
14
Customer equipment
お客様装置
Safety relay
安全リレー
ex) QS90SR2SP (Mitsubishi
例）QS90SR2SP
Electric Corporation)
( 三菱電機株式会社)
No connection COM0
Safety
安全入力1
input 1
X0
COM1
No connection
安全入力2
X1
+24V
24V DC
Customer Power Supply (DC 24V)
お客様電源（DC 24V）
Safety
input 2
24G
24G