VOLTAGE MONITOR RELAYS
VM Series Over/Undervoltage
Fixed Time Delay on Drop-Out
12-120V Plug-in
u
u
u
u
u
u
u
28
www.macromatic.com
sales@macromatic.com
800-238-7474
Monitors AC single phase
and DC voltages
Wide range of user-adjust-
able pick-up and drop-out
settings
Fixed time delay on drop-
out of 500ms
LED indicates output relay
status
Compact plug-in case
utilizing industry standard 8
pin octal socket
10A DPDT output contacts
(with appropriate socket)
*
** Drop-out Voltage is adjustable from 75-95% of the adjusted Pick-up Setting.
Sockets & Accessories Pages 81 & 82
Over/Under Voltage Relays provide protection to equipment where either an over or
under voltage condition is potentially damaging. They are designed to operate when the
operating voltage reaches a preset value and drop-out when the operating voltage drops
to a level below the preset value.
The pick-up voltage setting is user-
adjustable from 85-115% of the
nominal voltage rating. As
standard, the VMP Series has a
drop-out voltage setting fixed at
95% of the pick-up voltage setting.
An adjustable drop-out setting of
75-95% of the pick-up setting is
available on the VMKP Series.
The relay energizes when the
monitored voltage is above the pick-up setting. The relay de-energizes when the moni-
tored voltage is below the drop-out setting for a period longer than the drop-out time
delay (T), which is a fixed 500ms for VM Series products. An adjustable time delay on
drop-out of 0.5-10 seconds is available (see Page 30).
NOMINAL
VOLTAGE
NOMINAL
VOLTAGE
110V DC
120V AC
120V AC
110V DC
12V DC
24V DC
48V DC
Drop-out Voltage is fixed at 95% of the adjusted Pick-up Setting.
12V DC
24V DC
48V DC
24V AC
24V AC
VOLTAGE RANGE VOLTAGE RANGE
VOLTAGE RANGE VOLTAGE RANGE*
102-138V AC
102-138V AC
94-126V DC
94-126V DC
10-14V DC
21-27V DC
41-55V DC
21-27V AC
10-14V DC
21-27V DC
41-55V DC
21-27V AC
PICK-UP
PICK-UP
Adjustable Pick-Up, Fixed Drop-Out Settings *
Adjustable Pick-Up & Drop-Out Settings **
Time Delay on Drop-out Fixed at 500ms
Time Delay on Drop-out Fixed at 500ms
77-131V AC
71-121V DC
DROP-OUT
97-131V AC
89-121V DC
16-26V DC
32-52V DC
DROP-OUT
16-26V AC
20-26V DC
39-52V DC
20-26V AC
8-13V DC
9-13V DC
Application Data & Dimensions Page 29
VMKP012D
VMKP024D
VMKP048D
VMKP024A
VMKP120A
VMKP110D
PRODUCT
PRODUCT
VMP024A
VMP120A
VMP012D
VMP024D
VMP048D
VMP110D
NUMBER
NUMBER
DIAGRAM 20
DIAGRAM 20
8 Pin Octal
8 Pin Octal
SOCKET
SOCKET
WIRING/
WIRING/
70169-D
70169-D
1/09
