The Mercoid
MPC Junior Pump Controller provides versatile
level control in a standard 1/4 DIN package. Designed for
use with almost any style level transmitter the unit displays
the present level and main set point value. Incorporated
in the MPC Jr. is programmable level differential for on/off
control of one or two pumps, valves, or other devices through
two SPDT relays. Also featured are two additional programmable
alarm contacts with front alarm light indication.
The MPC Jr. is flexible and incorporates
a user-friendly programming menu. The front face meets NEMA
4X for outdoor panel mounting.
SPECIFICATIONS
Inputs: 4 (or 0) to 20 mA DC or 2 (or 0) to 10 VDC
selectable.
Input Impedance: Current = 10 ohms, Voltage = 5 K
ohms.
Output Ratings: Control Relays: SPDT, rated
10A @ 240 VAC res., 1/4 hp @ 120 VAC, 1/3 hp @ 240 VAC; Alarm
Relays: SPST, 3A @ 240 VAC res., 1/10 hp @ 120 VAC; Others:
15 VDC @ 20 mA for output one and output two.
Control Type: On/off, reverse (pump out) or direct
(pump in) acting.
Power Requirements: 100 to 240 VAC nominal,
+10%-15%, 50 to 400 Hz, single phase; 132 to 240 VDC nominal,
+10%-15%.
Power Consumption: 7.5 VA maximum.
Accuracy: ±0.25% of span, ±1 least significant digit.
Display: Two 4-digit, 7 segment 0.56" high LEDs.
Display Resolution: 1 count.
Memory Backup: Nonvolatile memory (no batteries required).
Serial Communications: Optional RS-232 or RS-485
with Modbus® protocol.
Ambient Operating Temperature/RH: 14 to 131°F (-10
55°C)/0 to 90% up to 104°F (40°C) non-condensing, 10 to
50% at 131°F (55°C) non-condensing.
Weight: 16 oz (454 g).
Front Panel Rating: Meets UL Type 4X (IP66).
Loop Power Supply (isolated): 24 VDC @ 50 mA, regulated.
Agency Approvals: UL 508, CE.
NOTE: For compatible level
transmitters, see Mercoid Series PBLT and SBLT.
ACCESSORIES --
See "Ordering" Page
A-900 Weatherproof Enclosure,
Type 4X. Control direct panel mounts in the front of the
enclosure.
A-901 Weatherproof enclosure, Type 4X. Clear plastic
window with rear panel for mounting the control inside the
enclosure.
OPTIONS -- Consult
Factory for Price and Delivery
-RC Retransmission of input,
4 to 20 mA. Add suffix -RC.
-RV Retransmission of input, 0 to 10 VDC.
Add suffix -RV.
-232 RS-232 Modbus® -RTU Serial Communications.
Add suffix -232.
-485 RS-485 Modbus® -RTU Serial Communications.
Add suffix -485.
FEATURES
- Selectable pump alternation when used with two pumps
to minimize pump wear.
- Integral 24 VDC power supply for transmitter.
- User selectable security lock-out of programming and/or
set points.
- Optional process input retransmission as a current
(4 to 20 mA) or voltage (2 to 10 VDC) analog signal.
- Analog output on pump "on" condition for activation
of separate pump run time meters.
