Spellman High Voltage Electronics Limited - Company Confidential
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81408-4r2 MPD Series Installation and User Guide
Page 9 of 29
Table 1. Connector pin-out, all units
The control and monitoring signals and supply power are connected via a single 15 way
male ‘D’ connector:
PIN
SIGNAL NAME
PARAMETERS
1
Power Ground
Ground
2
+24Vdc Input
+24Vdc @ 1 amp maximum
3
Voltage Monitor Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10k
Ω
4
Voltage reference output
10V
5
Voltage Program Input
0 to 10 Vdc equals 0 to 100% of rated output, Zin
= 10M
Ω
6
Voltage Program
Differential Amplifier
Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10k
Ω
7
Voltage Program
Differential Amplifier Input
Positive
0 to 10 Vdc differential between pin 7 and pin 9
equals 0 to 100% of rated output, diode clamped
to ground, Zin = 38k
Ω
8
Current Monitor Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10k
Ω
9
Voltage Program
Differential Amplifier Input -
Negative
0 to 10 Vdc differential between pin 7 and pin 9
equals 0 to 100% of rated output, diode clamped
to ground, Zin = 38k
Ω
10
Voltage Program Digital
Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10k
Ω
11
Analog signal ground
Analog signal ground for control and monitoring
12
Enable Input
Low = Enable. TTL, CMOS and open collector
compliant
13
Digital Mode
RS232 or RS485 configuration
Low = RS485
Open circuit = RS232
14
RS232 TxD/ RS485-
Transmit data (output) wrt pin 1 or
RS485 inverting
15
RS232 RxD/ RS485+
Receive data (input) wrt pin 1 or
RS485 non inverting
