MG 43 Series - Wiring Hold Input

1443DV2 EM-9422-B Rev.3
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
1.6.6 WIRING HOLD INPUT
Displayed value is held with an external HOLD command input.
Connect the contact across HOLD to COM as shown in the following gure.
Close the contact to hold the value.
Detecting voltage Approx. 2.1 V DC, 0.03 mA
Detecting level ≤ 0.8 V
IMPORTANT
• Be sure to conrm the input polarity in wiring.
• The HOLD input is not isolated from the internal circuit.
HOLD input
HOLD command signal
COM HOLD
34
■ WIRING EXAMPLES
L
HOLD
H
3
Twisted pair cable
L
HOLD
H
L
HOLD
H
L
HOLD
H
Twisted pair cable
Twisted pair cable
COM
3
4
COM
(b)
Transistor
(a)
5V–CMOS, TTL
(c)
Photo-Coupler
(d)
Relay
Relay
Photo-Coupler
HOLD
4
HOLD
3
Twisted pair cable
COM
4
HOLD
3
4
COM
HOLD