MG 40 Series - Wiring Hold Input

1440DCT EM-9538-B Rev.5
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
1.6.5 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. 5 V DC, 1 mA
Detecting level ≤ 1.5 V
IMPORTANT
• Be sure to conrm the input polarity in wiring.
• Isolate with a photo-coupler or a relay as the HOLD input is not isolated to the AC input signal.
HOLD input
HOLD command signal
COM HOLD
34
■ WIRING EXAMPLES
L
HOLD
H
L
HOLD
H
Twisted pair cable
Twisted pair cable
3
4
COM
(a)
Photo-Coupler
(b)
Relay
Relay
Photo-Coupler
HOLD
3
4
COM
HOLD