Data Sheet for Product

MXG461B Series Modulating Control Valve Technical Instructions
with Magnetic Actuator Document Number 125-4461
October 23, 2018
Siemens Industry, Inc. Page 7
Specification s
Electrical
Low-voltage use only Class 2 (SELV, PELV)
24 Vac
Operating voltage 24 Vac ± 20%
Frequency 45 to 65 Hz
Typical power consumption See Table 1 P
med
Standby <1 W (valve fully closed)
Nominal apparent power See Table 1, S
NA
Suitable fuse Slow, see Table 1, I
N
24 Vdc
Operating voltage 20 to 30 Vdc
Current draw 0.5A/4A (maximum)
Functional data, actuator
Input
Positioning signal Y 0/2 to 10 Vdc or 0/4 to 20 mA, or
0 to 20 Vdc Phs phase cut
Impedance 0/2 to 10Vdc 100K ohm//5nF (load < 0.1mA)
0/4 to 20 mA 240 ohm//5nF
Forced control
Impedance 22K ohm
Closing the valve (Z connected to G0) <1 Vac; <0.8 Vdc
Opening the valve (Z connected to G0) >6 Vac; >5 Vdc
No function (Z not wired) Phase-cut or positioning signal Y
active
Output
Position feedback signal U voltage 0/2 to 10 Vdc; load resistance > 500Ω
current 0/4 to 20 mA; load resistance < 500Ω
Stroke measurement Inductive
Nonlinearity +3% of end value
Functional data, valve
Nominal pressure ANSI 125 (PN 16)
Operating pressure p
e
max
1)
232 psi (16 bar)
Pressure differential p
v
max See Table 1
Leakage at A→ AB max. 0.05% Cv
p = 14.5 psi (1 bar) B→ AB < 0.2% Cv depending on
operating conditions
Permissible media Drinking water, cooling, cold and hot
water, water with anti-freeze
Water temperature –4°F to 266°F (–20°C to 130°C)
Valve characteristic
2)
Equal percentage or linear, optimized
near the closing point
Resolution H/H100 1 : 1000 (H = Stroke)
Type of operation Modulating
Position when de-energized A → AB closed
Orientation: Upright to horizontal
Positioning time <2 seconds
Materials
Valve body Red bronze (CC499K)
Cover flange Red bronze (CC499K)
Seat/Inner valve Stainless Steel
Valve stem seal EPDM (O-ring)
1. Tested at 1.5 × PN (24 bar), similar to DIN 3230-3
2. Can be selected via DIP switch.